Home / 137,744.20-206,397.60-90,942.40

Finding the Fourth Proportional to 137,744.20, 206,397.60 and 90,942.40

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Solution

The fourth proportional to 137,744.20, 206,397.60 and 90,942.40 is: 136,269.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,744.20 : 206,397.60 = 90,942.40 : x
  2. Step 2: Convert to fraction form
    137,744.20/206,397.60 = 90,942.40/x
  3. Step 3: Cross multiply
    137,744.20x = 206,397.60 × 90,942.40
  4. Step 4: Simplify right side
    137,744.20x = 18,770,293,098.24
  5. Step 5: Solve for x
    x = 18,770,293,098.24/137,744.20
  6. Step 6: Final answer
    x = 136,269.21

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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.