170 dry quarts in dry gallons
Result
The conversion result is: 170 dry quarts is equivalent to 42.5 dry gallons.[1]
Conversion formula
How to convert 170 dry quarts to dry gallons?
We know (by definition) that: 1 dryquart ≈ 0.25 drygallon.
We can set up a proportion to solve for the number of dry gallons.
1 dryquart / 170 dryquart ≈ 0.25 drygallon / x drygallon
Now, we cross multiply to solve for our unknown x:
x drygallon ≈ (170 dryquart / 1 dryquart) * 0.25 drygallon → x drygallon ≈ 42.5 drygallon
Conclusion:
170 dryquart ≈ 42.5 drygallon

Conversion in the opposite direction
The inverse of the conversion factor is that 1 dry gallon is equal to 0.0235294117647059 times 170 dry quarts.
It can also be expressed as: 170 dry quarts is equal to 1 / 0.0235294117647059 dry gallons.
Approximation
An approximate numerical result would be: one hundred and seventy dry quarts is about zero dry gallons, or alternatively, a dry gallon is about zero point zero two times one hundred and seventy dry quarts.
Footnotes
[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).
Results may contain small errors due to the use of floating point arithmetic.