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Finding the Fourth Proportional to 129,933.20, 195,045.60 and 100,481.60

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Solution

The fourth proportional to 129,933.20, 195,045.60 and 100,481.60 is: 150,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,933.20 : 195,045.60 = 100,481.60 : x
  2. Step 2: Convert to fraction form
    129,933.20/195,045.60 = 100,481.60/x
  3. Step 3: Cross multiply
    129,933.20x = 195,045.60 × 100,481.60
  4. Step 4: Simplify right side
    129,933.20x = 19,598,493,960.96
  5. Step 5: Solve for x
    x = 19,598,493,960.96/129,933.20
  6. Step 6: Final answer
    x = 150,835.15

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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.