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Finding the Fourth Proportional to 139,761.43, 192,898.08 and 88,833.49

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Solution

The fourth proportional to 139,761.43, 192,898.08 and 88,833.49 is: 122,607.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,761.43 : 192,898.08 = 88,833.49 : x
  2. Step 2: Convert to fraction form
    139,761.43/192,898.08 = 88,833.49/x
  3. Step 3: Cross multiply
    139,761.43x = 192,898.08 × 88,833.49
  4. Step 4: Simplify right side
    139,761.43x = 17,135,809,660.70
  5. Step 5: Solve for x
    x = 17,135,809,660.70/139,761.43
  6. Step 6: Final answer
    x = 122,607.57

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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.