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Finding the Fourth Proportional to 92,229.68, 138,528.90 and 89,203.12

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Solution

The fourth proportional to 92,229.68, 138,528.90 and 89,203.12 is: 133,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,229.68 : 138,528.90 = 89,203.12 : x
  2. Step 2: Convert to fraction form
    92,229.68/138,528.90 = 89,203.12/x
  3. Step 3: Cross multiply
    92,229.68x = 138,528.90 × 89,203.12
  4. Step 4: Simplify right side
    92,229.68x = 12,357,209,743.85
  5. Step 5: Solve for x
    x = 12,357,209,743.85/92,229.68
  6. Step 6: Final answer
    x = 133,983.00

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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.