Home / 129,917.20-194,778.60-70,819.60

Finding the Fourth Proportional to 129,917.20, 194,778.60 and 70,819.60

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Solution

The fourth proportional to 129,917.20, 194,778.60 and 70,819.60 is: 106,176.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,917.20 : 194,778.60 = 70,819.60 : x
  2. Step 2: Convert to fraction form
    129,917.20/194,778.60 = 70,819.60/x
  3. Step 3: Cross multiply
    129,917.20x = 194,778.60 × 70,819.60
  4. Step 4: Simplify right side
    129,917.20x = 13,794,142,540.56
  5. Step 5: Solve for x
    x = 13,794,142,540.56/129,917.20
  6. Step 6: Final answer
    x = 106,176.41

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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.