Finding the Fourth Proportional to 115,385.52, 172,959.48 and 83,716.68
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Solution
The fourth proportional to 115,385.52, 172,959.48 and 83,716.68 is: 125,488.83
Step by Step Solution
- Step 1: Write the proportion equation
115,385.52 : 172,959.48 = 83,716.68 : x - Step 2: Convert to fraction form
115,385.52/172,959.48 = 83,716.68/x - Step 3: Cross multiply
115,385.52x = 172,959.48 × 83,716.68 - Step 4: Simplify right side
115,385.52x = 14,479,593,440.13 - Step 5: Solve for x
x = 14,479,593,440.13/115,385.52 - Step 6: Final answer
x = 125,488.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.