A decimal fraction of .1875 would relate to which of the following drill sizes?

To determine the drill size that corresponds to the decimal fraction of .1875, it is essential to convert the fraction options into their decimal equivalents.

Starting with 3/32, this can be calculated by dividing 3 by 32, resulting in approximately 0.09375. For 3/16, dividing 3 by 16 yields 0.1875, which precisely matches the decimal fraction given in the question. Next, 3/8 calculates to 0.375, and 1/4 results in 0.25.

The only fraction among the choices that equals .1875 is 3/16. Therefore, the correct response is indeed related to this fraction, affirming that 3/16 is the correct drill size that aligns with the decimal fraction provided.