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Finding the Fourth Proportional to 100,658.90, 150,989.01 and 29,581.28

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Solution

The fourth proportional to 100,658.90, 150,989.01 and 29,581.28 is: 44,372.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,658.90 : 150,989.01 = 29,581.28 : x
  2. Step 2: Convert to fraction form
    100,658.90/150,989.01 = 29,581.28/x
  3. Step 3: Cross multiply
    100,658.90x = 150,989.01 × 29,581.28
  4. Step 4: Simplify right side
    100,658.90x = 4,466,448,181.73
  5. Step 5: Solve for x
    x = 4,466,448,181.73/100,658.90
  6. Step 6: Final answer
    x = 44,372.11

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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.