Finding the Fourth Proportional to 157,139.97, 216,898.93 and 102,700.07
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Solution
The fourth proportional to 157,139.97, 216,898.93 and 102,700.07 is: 141,756.01
Step by Step Solution
- Step 1: Write the proportion equation
157,139.97 : 216,898.93 = 102,700.07 : x - Step 2: Convert to fraction form
157,139.97/216,898.93 = 102,700.07/x - Step 3: Cross multiply
157,139.97x = 216,898.93 × 102,700.07 - Step 4: Simplify right side
157,139.97x = 22,275,535,151.18 - Step 5: Solve for x
x = 22,275,535,151.18/157,139.97 - Step 6: Final answer
x = 141,756.01
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.