38.1 is what percent of 122.8 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 122.8 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 122.8, so we can write it down as 100%=122.8.
4. We know, that x% equals 38.1 of the output value, so we can write it down as x%=38.1.
5. Now we have two simple equations:
1) 100%=122.8
2) x%=38.1
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=122.8/38.1
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 38.1 is what percent of 122.8

100%/x%=122.8/38.1
(100/x)*x=(122.8/38.1)*x       - we multiply both sides of the equation by x
100=3.2230971128609*x       - we divide both sides of the equation by (3.2230971128609) to get x
100/3.2230971128609=x
31.026058631922=x
x=31.026058631922

now we have:
38.1 is 31.026058631922% of 122.8