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Finding the Fourth Proportional to 99,731,908.80, 149,597,863.20 and 67,399,300.80

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Solution

The fourth proportional to 99,731,908.80, 149,597,863.20 and 67,399,300.80 is: 101,098,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,731,908.80 : 149,597,863.20 = 67,399,300.80 : x
  2. Step 2: Convert to fraction form
    99,731,908.80/149,597,863.20 = 67,399,300.80/x
  3. Step 3: Cross multiply
    99,731,908.80x = 149,597,863.20 × 67,399,300.80
  4. Step 4: Simplify right side
    99,731,908.80x = 10,082,791,380,854,050
  5. Step 5: Solve for x
    x = 10,082,791,380,854,050/99,731,908.80
  6. Step 6: Final answer
    x = 101,098,951.20

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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.