40.3 is what percent of 208.7 - 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 208.7 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 208.7, so we can write it down as 100%=208.7.
4. We know, that x% equals 40.3 of the output value, so we can write it down as x%=40.3.
5. Now we have two simple equations:
1) 100%=208.7
2) x%=40.3
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%=208.7/40.3
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 40.3 is what percent of 208.7

100%/x%=208.7/40.3
(100/x)*x=(208.7/40.3)*x       - we multiply both sides of the equation by x
100=5.1786600496278*x       - we divide both sides of the equation by (5.1786600496278) to get x
100/5.1786600496278=x
19.310014374701=x
x=19.310014374701

now we have:
40.3 is 19.310014374701% of 208.7