Home / 129,686.20-194,675.10-100,234.60

Finding the Fourth Proportional to 129,686.20, 194,675.10 and 100,234.60

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Solution

The fourth proportional to 129,686.20, 194,675.10 and 100,234.60 is: 150,464.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,686.20 : 194,675.10 = 100,234.60 : x
  2. Step 2: Convert to fraction form
    129,686.20/194,675.10 = 100,234.60/x
  3. Step 3: Cross multiply
    129,686.20x = 194,675.10 × 100,234.60
  4. Step 4: Simplify right side
    129,686.20x = 19,513,180,778.46
  5. Step 5: Solve for x
    x = 19,513,180,778.46/129,686.20
  6. Step 6: Final answer
    x = 150,464.59

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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.