Finding the Fourth Proportional to 115,292.29, 159,177.39 and 72,330.69
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Solution
The fourth proportional to 115,292.29, 159,177.39 and 72,330.69 is: 99,862.80
Step by Step Solution
- Step 1: Write the proportion equation
115,292.29 : 159,177.39 = 72,330.69 : x - Step 2: Convert to fraction form
115,292.29/159,177.39 = 72,330.69/x - Step 3: Cross multiply
115,292.29x = 159,177.39 × 72,330.69 - Step 4: Simplify right side
115,292.29x = 11,513,410,451.10 - Step 5: Solve for x
x = 11,513,410,451.10/115,292.29 - Step 6: Final answer
x = 99,862.80
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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.