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Finding the Fourth Proportional to 80,157.88, 120,121.80 and 45,023.59

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Solution

The fourth proportional to 80,157.88, 120,121.80 and 45,023.59 is: 67,470.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,157.88 : 120,121.80 = 45,023.59 : x
  2. Step 2: Convert to fraction form
    80,157.88/120,121.80 = 45,023.59/x
  3. Step 3: Cross multiply
    80,157.88x = 120,121.80 × 45,023.59
  4. Step 4: Simplify right side
    80,157.88x = 5,408,314,673.26
  5. Step 5: Solve for x
    x = 5,408,314,673.26/80,157.88
  6. Step 6: Final answer
    x = 67,470.78

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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.