Finding the Fourth Proportional to 502,092.70, 753,139.05 and 128,115.70
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Solution
The fourth proportional to 502,092.70, 753,139.05 and 128,115.70 is: 192,173.55
Step by Step Solution
- Step 1: Write the proportion equation
502,092.70 : 753,139.05 = 128,115.70 : x - Step 2: Convert to fraction form
502,092.70/753,139.05 = 128,115.70/x - Step 3: Cross multiply
502,092.70x = 753,139.05 × 128,115.70 - Step 4: Simplify right side
502,092.70x = 96,488,936,588.09 - Step 5: Solve for x
x = 96,488,936,588.09/502,092.70 - Step 6: Final answer
x = 192,173.55
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1.5x scale
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.