Home / 107,487.20-161,230.80-54,343.10

Finding the Fourth Proportional to 107,487.20, 161,230.80 and 54,343.10

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Solution

The fourth proportional to 107,487.20, 161,230.80 and 54,343.10 is: 81,514.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,487.20 : 161,230.80 = 54,343.10 : x
  2. Step 2: Convert to fraction form
    107,487.20/161,230.80 = 54,343.10/x
  3. Step 3: Cross multiply
    107,487.20x = 161,230.80 × 54,343.10
  4. Step 4: Simplify right side
    107,487.20x = 8,761,781,487.48
  5. Step 5: Solve for x
    x = 8,761,781,487.48/107,487.20
  6. Step 6: Final answer
    x = 81,514.65

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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.