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Finding the Fourth Proportional to 139,750.76, 192,791.56 and 82,350.87

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Solution

The fourth proportional to 139,750.76, 192,791.56 and 82,350.87 is: 113,606.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,750.76 : 192,791.56 = 82,350.87 : x
  2. Step 2: Convert to fraction form
    139,750.76/192,791.56 = 82,350.87/x
  3. Step 3: Cross multiply
    139,750.76x = 192,791.56 × 82,350.87
  4. Step 4: Simplify right side
    139,750.76x = 15,876,552,694.66
  5. Step 5: Solve for x
    x = 15,876,552,694.66/139,750.76
  6. Step 6: Final answer
    x = 113,606.20

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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.