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Finding the Fourth Proportional to 80,158.88, 120,123.30 and 45,024.59

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Solution

The fourth proportional to 80,158.88, 120,123.30 and 45,024.59 is: 67,472.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,158.88 : 120,123.30 = 45,024.59 : x
  2. Step 2: Convert to fraction form
    80,158.88/120,123.30 = 45,024.59/x
  3. Step 3: Cross multiply
    80,158.88x = 120,123.30 × 45,024.59
  4. Step 4: Simplify right side
    80,158.88x = 5,408,502,331.95
  5. Step 5: Solve for x
    x = 5,408,502,331.95/80,158.88
  6. Step 6: Final answer
    x = 67,472.28

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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.