Home / 80,144.20-120,216.30-38,672.20

Finding the Fourth Proportional to 80,144.20, 120,216.30 and 38,672.20

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Solution

The fourth proportional to 80,144.20, 120,216.30 and 38,672.20 is: 58,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,144.20 : 120,216.30 = 38,672.20 : x
  2. Step 2: Convert to fraction form
    80,144.20/120,216.30 = 38,672.20/x
  3. Step 3: Cross multiply
    80,144.20x = 120,216.30 × 38,672.20
  4. Step 4: Simplify right side
    80,144.20x = 4,649,028,796.86
  5. Step 5: Solve for x
    x = 4,649,028,796.86/80,144.20
  6. Step 6: Final answer
    x = 58,008.30

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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.