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Finding the Fourth Proportional to 132,033.80, 197,781.90 and 81,960.20

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Solution

The fourth proportional to 132,033.80, 197,781.90 and 81,960.20 is: 122,773.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,033.80 : 197,781.90 = 81,960.20 : x
  2. Step 2: Convert to fraction form
    132,033.80/197,781.90 = 81,960.20/x
  3. Step 3: Cross multiply
    132,033.80x = 197,781.90 × 81,960.20
  4. Step 4: Simplify right side
    132,033.80x = 16,210,244,080.38
  5. Step 5: Solve for x
    x = 16,210,244,080.38/132,033.80
  6. Step 6: Final answer
    x = 122,773.44

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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.