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Finding the Fourth Proportional to 139,251.92, 192,167.88 and 75,589.79

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Solution

The fourth proportional to 139,251.92, 192,167.88 and 75,589.79 is: 104,314.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,251.92 : 192,167.88 = 75,589.79 : x
  2. Step 2: Convert to fraction form
    139,251.92/192,167.88 = 75,589.79/x
  3. Step 3: Cross multiply
    139,251.92x = 192,167.88 × 75,589.79
  4. Step 4: Simplify right side
    139,251.92x = 14,525,929,693.95
  5. Step 5: Solve for x
    x = 14,525,929,693.95/139,251.92
  6. Step 6: Final answer
    x = 104,314.04

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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.