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Finding the Fourth Proportional to 99,691,919.10, 149,691,843.45 and 54,342,287.10

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Solution

The fourth proportional to 99,691,919.10, 149,691,843.45 and 54,342,287.10 is: 81,597,357.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,691,919.10 : 149,691,843.45 = 54,342,287.10 : x
  2. Step 2: Convert to fraction form
    99,691,919.10/149,691,843.45 = 54,342,287.10/x
  3. Step 3: Cross multiply
    99,691,919.10x = 149,691,843.45 × 54,342,287.10
  4. Step 4: Simplify right side
    99,691,919.10x = 8,134,597,133,288,154
  5. Step 5: Solve for x
    x = 8,134,597,133,288,154/99,691,919.10
  6. Step 6: Final answer
    x = 81,597,357.21

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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.