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Finding the Fourth Proportional to 99,136.20, 148,689.90 and 29,008.20

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Solution

The fourth proportional to 99,136.20, 148,689.90 and 29,008.20 is: 43,508.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,136.20 : 148,689.90 = 29,008.20 : x
  2. Step 2: Convert to fraction form
    99,136.20/148,689.90 = 29,008.20/x
  3. Step 3: Cross multiply
    99,136.20x = 148,689.90 × 29,008.20
  4. Step 4: Simplify right side
    99,136.20x = 4,313,226,357.18
  5. Step 5: Solve for x
    x = 4,313,226,357.18/99,136.20
  6. Step 6: Final answer
    x = 43,508.09

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1.5x scale

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.