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Finding the Fourth Proportional to 99,497.20, 149,027.10 and 79,814.20

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Solution

The fourth proportional to 99,497.20, 149,027.10 and 79,814.20 is: 119,545.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,497.20 : 149,027.10 = 79,814.20 : x
  2. Step 2: Convert to fraction form
    99,497.20/149,027.10 = 79,814.20/x
  3. Step 3: Cross multiply
    99,497.20x = 149,027.10 × 79,814.20
  4. Step 4: Simplify right side
    99,497.20x = 11,894,478,764.82
  5. Step 5: Solve for x
    x = 11,894,478,764.82/99,497.20
  6. Step 6: Final answer
    x = 119,545.86

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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.