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Finding the Fourth Proportional to 146,687.70, 220,177.35 and 71,892.30

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Solution

The fourth proportional to 146,687.70, 220,177.35 and 71,892.30 is: 107,909.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,687.70 : 220,177.35 = 71,892.30 : x
  2. Step 2: Convert to fraction form
    146,687.70/220,177.35 = 71,892.30/x
  3. Step 3: Cross multiply
    146,687.70x = 220,177.35 × 71,892.30
  4. Step 4: Simplify right side
    146,687.70x = 15,829,056,099.41
  5. Step 5: Solve for x
    x = 15,829,056,099.41/146,687.70
  6. Step 6: Final answer
    x = 107,909.91

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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.