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Finding the Fourth Proportional to 80,159.88, 120,124.80 and 45,025.60

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Solution

The fourth proportional to 80,159.88, 120,124.80 and 45,025.60 is: 67,473.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,159.88 : 120,124.80 = 45,025.60 : x
  2. Step 2: Convert to fraction form
    80,159.88/120,124.80 = 45,025.60/x
  3. Step 3: Cross multiply
    80,159.88x = 120,124.80 × 45,025.60
  4. Step 4: Simplify right side
    80,159.88x = 5,408,691,194.88
  5. Step 5: Solve for x
    x = 5,408,691,194.88/80,159.88
  6. Step 6: Final answer
    x = 67,473.79

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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.