Home / 129,789.60-194,749.20-73,672.80

Finding the Fourth Proportional to 129,789.60, 194,749.20 and 73,672.80

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Solution

The fourth proportional to 129,789.60, 194,749.20 and 73,672.80 is: 110,545.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,789.60 : 194,749.20 = 73,672.80 : x
  2. Step 2: Convert to fraction form
    129,789.60/194,749.20 = 73,672.80/x
  3. Step 3: Cross multiply
    129,789.60x = 194,749.20 × 73,672.80
  4. Step 4: Simplify right side
    129,789.60x = 14,347,718,861.76
  5. Step 5: Solve for x
    x = 14,347,718,861.76/129,789.60
  6. Step 6: Final answer
    x = 110,545.98

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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.