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Finding the Fourth Proportional to 125,499.28, 173,191.80 and 68,910.88

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Solution

The fourth proportional to 125,499.28, 173,191.80 and 68,910.88 is: 95,098.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,499.28 : 173,191.80 = 68,910.88 : x
  2. Step 2: Convert to fraction form
    125,499.28/173,191.80 = 68,910.88/x
  3. Step 3: Cross multiply
    125,499.28x = 173,191.80 × 68,910.88
  4. Step 4: Simplify right side
    125,499.28x = 11,934,799,346.78
  5. Step 5: Solve for x
    x = 11,934,799,346.78/125,499.28
  6. Step 6: Final answer
    x = 95,098.55

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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.