Home / 137,922.13-206,522.07-90,387.69

Finding the Fourth Proportional to 137,922.13, 206,522.07 and 90,387.69

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Solution

The fourth proportional to 137,922.13, 206,522.07 and 90,387.69 is: 135,344.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,922.13 : 206,522.07 = 90,387.69 : x
  2. Step 2: Convert to fraction form
    137,922.13/206,522.07 = 90,387.69/x
  3. Step 3: Cross multiply
    137,922.13x = 206,522.07 × 90,387.69
  4. Step 4: Simplify right side
    137,922.13x = 18,667,052,841.32
  5. Step 5: Solve for x
    x = 18,667,052,841.32/137,922.13
  6. Step 6: Final answer
    x = 135,344.87

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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.