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Finding the Fourth Proportional to 139,454.73, 192,447.55 and 75,792.53

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Solution

The fourth proportional to 139,454.73, 192,447.55 and 75,792.53 is: 104,593.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,454.73 : 192,447.55 = 75,792.53 : x
  2. Step 2: Convert to fraction form
    139,454.73/192,447.55 = 75,792.53/x
  3. Step 3: Cross multiply
    139,454.73x = 192,447.55 × 75,792.53
  4. Step 4: Simplify right side
    139,454.73x = 14,586,086,200.14
  5. Step 5: Solve for x
    x = 14,586,086,200.14/139,454.73
  6. Step 6: Final answer
    x = 104,593.70

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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.