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Finding the Fourth Proportional to 101,169.20, 151,753.80 and 92,639.90

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Solution

The fourth proportional to 101,169.20, 151,753.80 and 92,639.90 is: 138,959.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,169.20 : 151,753.80 = 92,639.90 : x
  2. Step 2: Convert to fraction form
    101,169.20/151,753.80 = 92,639.90/x
  3. Step 3: Cross multiply
    101,169.20x = 151,753.80 × 92,639.90
  4. Step 4: Simplify right side
    101,169.20x = 14,058,456,856.62
  5. Step 5: Solve for x
    x = 14,058,456,856.62/101,169.20
  6. Step 6: Final answer
    x = 138,959.85

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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.