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Finding the Fourth Proportional to 132,506.80, 198,760.20 and 80,018.80

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Solution

The fourth proportional to 132,506.80, 198,760.20 and 80,018.80 is: 120,028.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,506.80 : 198,760.20 = 80,018.80 : x
  2. Step 2: Convert to fraction form
    132,506.80/198,760.20 = 80,018.80/x
  3. Step 3: Cross multiply
    132,506.80x = 198,760.20 × 80,018.80
  4. Step 4: Simplify right side
    132,506.80x = 15,904,552,691.76
  5. Step 5: Solve for x
    x = 15,904,552,691.76/132,506.80
  6. Step 6: Final answer
    x = 120,028.20

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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.