Home / 138,613.43-207,914.36-75,831.32

Finding the Fourth Proportional to 138,613.43, 207,914.36 and 75,831.32

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Solution

The fourth proportional to 138,613.43, 207,914.36 and 75,831.32 is: 113,743.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,613.43 : 207,914.36 = 75,831.32 : x
  2. Step 2: Convert to fraction form
    138,613.43/207,914.36 = 75,831.32/x
  3. Step 3: Cross multiply
    138,613.43x = 207,914.36 × 75,831.32
  4. Step 4: Simplify right side
    138,613.43x = 15,766,420,506.38
  5. Step 5: Solve for x
    x = 15,766,420,506.38/138,613.43
  6. Step 6: Final answer
    x = 113,743.81

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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.