Home / 107,934.40-161,707.20-66,332.80

Finding the Fourth Proportional to 107,934.40, 161,707.20 and 66,332.80

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Solution

The fourth proportional to 107,934.40, 161,707.20 and 66,332.80 is: 99,379.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,934.40 : 161,707.20 = 66,332.80 : x
  2. Step 2: Convert to fraction form
    107,934.40/161,707.20 = 66,332.80/x
  3. Step 3: Cross multiply
    107,934.40x = 161,707.20 × 66,332.80
  4. Step 4: Simplify right side
    107,934.40x = 10,726,491,356.16
  5. Step 5: Solve for x
    x = 10,726,491,356.16/107,934.40
  6. Step 6: Final answer
    x = 99,379.73

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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.