Finding the Fourth Proportional to 125,112.47, 172,658.09 and 71,402.49
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Solution
The fourth proportional to 125,112.47, 172,658.09 and 71,402.49 is: 98,537.09
Step by Step Solution
- Step 1: Write the proportion equation
125,112.47 : 172,658.09 = 71,402.49 : x - Step 2: Convert to fraction form
125,112.47/172,658.09 = 71,402.49/x - Step 3: Cross multiply
125,112.47x = 172,658.09 × 71,402.49 - Step 4: Simplify right side
125,112.47x = 12,328,217,723.15 - Step 5: Solve for x
x = 12,328,217,723.15/125,112.47 - Step 6: Final answer
x = 98,537.09
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1.5x scale
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.