42.3 is what percent of 155 - 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 155 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 155, so we can write it down as 100%=155.
4. We know, that x% equals 42.3 of the output value, so we can write it down as x%=42.3.
5. Now we have two simple equations:
1) 100%=155
2) x%=42.3
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%=155/42.3
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 42.3 is what percent of 155

100%/x%=155/42.3
(100/x)*x=(155/42.3)*x       - we multiply both sides of the equation by x
100=3.6643026004728*x       - we divide both sides of the equation by (3.6643026004728) to get x
100/3.6643026004728=x
27.290322580645=x
x=27.290322580645

now we have:
42.3 is 27.290322580645% of 155