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Finding the Fourth Proportional to 137,909, 206,738.70 and 95,808.80

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Solution

The fourth proportional to 137,909, 206,738.70 and 95,808.80 is: 143,626.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,909 : 206,738.70 = 95,808.80 : x
  2. Step 2: Convert to fraction form
    137,909/206,738.70 = 95,808.80/x
  3. Step 3: Cross multiply
    137,909x = 206,738.70 × 95,808.80
  4. Step 4: Simplify right side
    137,909x = 19,807,386,760.56
  5. Step 5: Solve for x
    x = 19,807,386,760.56/137,909
  6. Step 6: Final answer
    x = 143,626.50

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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.