Home / 257,918.67-386,753.49-108,118.71

Finding the Fourth Proportional to 257,918.67, 386,753.49 and 108,118.71

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Solution

The fourth proportional to 257,918.67, 386,753.49 and 108,118.71 is: 162,125.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,918.67 : 386,753.49 = 108,118.71 : x
  2. Step 2: Convert to fraction form
    257,918.67/386,753.49 = 108,118.71/x
  3. Step 3: Cross multiply
    257,918.67x = 386,753.49 × 108,118.71
  4. Step 4: Simplify right side
    257,918.67x = 41,815,288,426.80
  5. Step 5: Solve for x
    x = 41,815,288,426.80/257,918.67
  6. Step 6: Final answer
    x = 162,125.87

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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.