How to convert 109 US customary teaspoons to metric teaspoons?
We know (by definition) that:
We can set up a proportion to solve for the number of metric teaspoons.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 metric teaspoon is equal to 0.00930661175280083 times 109 US customary teaspoons.
It can also be expressed as: 109 US customary teaspoons is equal to metric teaspoons.
An approximate numerical result would be: one hundred and nine US customary teaspoons is about one hundred and seven point four five metric teaspoons, or alternatively, a metric teaspoon is about zero point zero one times one hundred and nine US customary teaspoons.
 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.