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Finding the Fourth Proportional to 125,333.13, 172,861.97 and 77,612.97

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Solution

The fourth proportional to 125,333.13, 172,861.97 and 77,612.97 is: 107,045.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,333.13 : 172,861.97 = 77,612.97 : x
  2. Step 2: Convert to fraction form
    125,333.13/172,861.97 = 77,612.97/x
  3. Step 3: Cross multiply
    125,333.13x = 172,861.97 × 77,612.97
  4. Step 4: Simplify right side
    125,333.13x = 13,416,330,503.69
  5. Step 5: Solve for x
    x = 13,416,330,503.69/125,333.13
  6. Step 6: Final answer
    x = 107,045.36

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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.