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Finding the Fourth Proportional to 143,960.20, 215,843.10 and 73,781.80

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Solution

The fourth proportional to 143,960.20, 215,843.10 and 73,781.80 is: 110,622.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,960.20 : 215,843.10 = 73,781.80 : x
  2. Step 2: Convert to fraction form
    143,960.20/215,843.10 = 73,781.80/x
  3. Step 3: Cross multiply
    143,960.20x = 215,843.10 × 73,781.80
  4. Step 4: Simplify right side
    143,960.20x = 15,925,292,435.58
  5. Step 5: Solve for x
    x = 15,925,292,435.58/143,960.20
  6. Step 6: Final answer
    x = 110,622.88

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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.