Home / 129,992.20-195,134.10-100,540.60

Finding the Fourth Proportional to 129,992.20, 195,134.10 and 100,540.60

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Solution

The fourth proportional to 129,992.20, 195,134.10 and 100,540.60 is: 150,923.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,992.20 : 195,134.10 = 100,540.60 : x
  2. Step 2: Convert to fraction form
    129,992.20/195,134.10 = 100,540.60/x
  3. Step 3: Cross multiply
    129,992.20x = 195,134.10 × 100,540.60
  4. Step 4: Simplify right side
    129,992.20x = 19,618,899,494.46
  5. Step 5: Solve for x
    x = 19,618,899,494.46/129,992.20
  6. Step 6: Final answer
    x = 150,923.67

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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.