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Finding the Fourth Proportional to 123,402.60, 185,121.99 and 39,134.66

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Solution

The fourth proportional to 123,402.60, 185,121.99 and 39,134.66 is: 58,707.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,402.60 : 185,121.99 = 39,134.66 : x
  2. Step 2: Convert to fraction form
    123,402.60/185,121.99 = 39,134.66/x
  3. Step 3: Cross multiply
    123,402.60x = 185,121.99 × 39,134.66
  4. Step 4: Simplify right side
    123,402.60x = 7,244,685,211.56
  5. Step 5: Solve for x
    x = 7,244,685,211.56/123,402.60
  6. Step 6: Final answer
    x = 58,707.72

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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.