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Finding the Fourth Proportional to 88,142.40, 132,046.92 and 68,323.92

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Solution

The fourth proportional to 88,142.40, 132,046.92 and 68,323.92 is: 102,356.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,142.40 : 132,046.92 = 68,323.92 : x
  2. Step 2: Convert to fraction form
    88,142.40/132,046.92 = 68,323.92/x
  3. Step 3: Cross multiply
    88,142.40x = 132,046.92 × 68,323.92
  4. Step 4: Simplify right side
    88,142.40x = 9,021,963,198.33
  5. Step 5: Solve for x
    x = 9,021,963,198.33/88,142.40
  6. Step 6: Final answer
    x = 102,356.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.