Home / 129,743.20-194,600.40-106,328.80

Finding the Fourth Proportional to 129,743.20, 194,600.40 and 106,328.80

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Solution

The fourth proportional to 129,743.20, 194,600.40 and 106,328.80 is: 159,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,743.20 : 194,600.40 = 106,328.80 : x
  2. Step 2: Convert to fraction form
    129,743.20/194,600.40 = 106,328.80/x
  3. Step 3: Cross multiply
    129,743.20x = 194,600.40 × 106,328.80
  4. Step 4: Simplify right side
    129,743.20x = 20,691,627,011.52
  5. Step 5: Solve for x
    x = 20,691,627,011.52/129,743.20
  6. Step 6: Final answer
    x = 159,481.40

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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.