Home / 137,845.16-206,406.87-90,310.71

Finding the Fourth Proportional to 137,845.16, 206,406.87 and 90,310.71

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Solution

The fourth proportional to 137,845.16, 206,406.87 and 90,310.71 is: 135,229.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,845.16 : 206,406.87 = 90,310.71 : x
  2. Step 2: Convert to fraction form
    137,845.16/206,406.87 = 90,310.71/x
  3. Step 3: Cross multiply
    137,845.16x = 206,406.87 × 90,310.71
  4. Step 4: Simplify right side
    137,845.16x = 18,640,750,978.58
  5. Step 5: Solve for x
    x = 18,640,750,978.58/137,845.16
  6. Step 6: Final answer
    x = 135,229.64

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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.