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Finding the Fourth Proportional to 96,743.70, 145,115.55 and 80,154.90

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Solution

The fourth proportional to 96,743.70, 145,115.55 and 80,154.90 is: 120,232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,743.70 : 145,115.55 = 80,154.90 : x
  2. Step 2: Convert to fraction form
    96,743.70/145,115.55 = 80,154.90/x
  3. Step 3: Cross multiply
    96,743.70x = 145,115.55 × 80,154.90
  4. Step 4: Simplify right side
    96,743.70x = 11,631,722,398.70
  5. Step 5: Solve for x
    x = 11,631,722,398.70/96,743.70
  6. Step 6: Final answer
    x = 120,232.35

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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.