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Finding the Fourth Proportional to 125,100.29, 187,669.87 and 42,013.73

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Solution

The fourth proportional to 125,100.29, 187,669.87 and 42,013.73 is: 63,027.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,100.29 : 187,669.87 = 42,013.73 : x
  2. Step 2: Convert to fraction form
    125,100.29/187,669.87 = 42,013.73/x
  3. Step 3: Cross multiply
    125,100.29x = 187,669.87 × 42,013.73
  4. Step 4: Simplify right side
    125,100.29x = 7,884,711,611.46
  5. Step 5: Solve for x
    x = 7,884,711,611.46/125,100.29
  6. Step 6: Final answer
    x = 63,027.12

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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.