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Finding the Fourth Proportional to 130,400.80, 195,863.76 and 126,725.92

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Solution

The fourth proportional to 130,400.80, 195,863.76 and 126,725.92 is: 190,344.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,400.80 : 195,863.76 = 126,725.92 : x
  2. Step 2: Convert to fraction form
    130,400.80/195,863.76 = 126,725.92/x
  3. Step 3: Cross multiply
    130,400.80x = 195,863.76 × 126,725.92
  4. Step 4: Simplify right side
    130,400.80x = 24,821,015,180.66
  5. Step 5: Solve for x
    x = 24,821,015,180.66/130,400.80
  6. Step 6: Final answer
    x = 190,344.04

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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.