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Finding the Fourth Proportional to 132,001.20, 198,001.80 and 38,494.80

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Solution

The fourth proportional to 132,001.20, 198,001.80 and 38,494.80 is: 57,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,001.20 : 198,001.80 = 38,494.80 : x
  2. Step 2: Convert to fraction form
    132,001.20/198,001.80 = 38,494.80/x
  3. Step 3: Cross multiply
    132,001.20x = 198,001.80 × 38,494.80
  4. Step 4: Simplify right side
    132,001.20x = 7,622,039,690.64
  5. Step 5: Solve for x
    x = 7,622,039,690.64/132,001.20
  6. Step 6: Final answer
    x = 57,742.20

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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.