Home / 126,479.20-189,589.20-73,861.60

Finding the Fourth Proportional to 126,479.20, 189,589.20 and 73,861.60

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Solution

The fourth proportional to 126,479.20, 189,589.20 and 73,861.60 is: 110,716.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,479.20 : 189,589.20 = 73,861.60 : x
  2. Step 2: Convert to fraction form
    126,479.20/189,589.20 = 73,861.60/x
  3. Step 3: Cross multiply
    126,479.20x = 189,589.20 × 73,861.60
  4. Step 4: Simplify right side
    126,479.20x = 14,003,361,654.72
  5. Step 5: Solve for x
    x = 14,003,361,654.72/126,479.20
  6. Step 6: Final answer
    x = 110,716.72

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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.