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Finding the Fourth Proportional to 129,902.40, 195,145.20 and 124,945.20

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Solution

The fourth proportional to 129,902.40, 195,145.20 and 124,945.20 is: 187,698.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,902.40 : 195,145.20 = 124,945.20 : x
  2. Step 2: Convert to fraction form
    129,902.40/195,145.20 = 124,945.20/x
  3. Step 3: Cross multiply
    129,902.40x = 195,145.20 × 124,945.20
  4. Step 4: Simplify right side
    129,902.40x = 24,382,456,043.04
  5. Step 5: Solve for x
    x = 24,382,456,043.04/129,902.40
  6. Step 6: Final answer
    x = 187,698.27

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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.