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Finding the Fourth Proportional to 139,227.80, 192,134.53 and 75,565.61

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Solution

The fourth proportional to 139,227.80, 192,134.53 and 75,565.61 is: 104,280.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,227.80 : 192,134.53 = 75,565.61 : x
  2. Step 2: Convert to fraction form
    139,227.80/192,134.53 = 75,565.61/x
  3. Step 3: Cross multiply
    139,227.80x = 192,134.53 × 75,565.61
  4. Step 4: Simplify right side
    139,227.80x = 14,518,762,815.80
  5. Step 5: Solve for x
    x = 14,518,762,815.80/139,227.80
  6. Step 6: Final answer
    x = 104,280.63

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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.