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Finding the Fourth Proportional to 133,328.39, 199,773.88 and 80,752.91

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Solution

The fourth proportional to 133,328.39, 199,773.88 and 80,752.91 is: 120,996.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,328.39 : 199,773.88 = 80,752.91 : x
  2. Step 2: Convert to fraction form
    133,328.39/199,773.88 = 80,752.91/x
  3. Step 3: Cross multiply
    133,328.39x = 199,773.88 × 80,752.91
  4. Step 4: Simplify right side
    133,328.39x = 16,132,320,951.24
  5. Step 5: Solve for x
    x = 16,132,320,951.24/133,328.39
  6. Step 6: Final answer
    x = 120,996.90

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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.