138 US customary teaspoons in dry gallons

Conversion formula
How to convert 138 US customary teaspoons to dry gallons?

We know (by definition) that: $1\mathrm{usteaspoon}\approx 0.00111896745751993\mathrm{drygallon}$

We can set up a proportion to solve for the number of dry gallons.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 138 ⁢ usteaspoon ≈ 0.15441750913775032 ⁢ drygallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 dry gallon is equal to 6.47594955768869 times 138 US customary teaspoons.

It can also be expressed as: 138 US customary teaspoons is equal to $\frac{1}{\mathrm{6.47594955768869}}$ dry gallons.

Approximation

An approximate numerical result would be: one hundred and thirty-eight US customary teaspoons is about zero point one five dry gallons, or alternatively, a dry gallon is about six point four eight times one hundred and thirty-eight US customary teaspoons.