Home / 138,555.09-207,831.38-43,785.29

Finding the Fourth Proportional to 138,555.09, 207,831.38 and 43,785.29

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Solution

The fourth proportional to 138,555.09, 207,831.38 and 43,785.29 is: 65,677.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,555.09 : 207,831.38 = 43,785.29 : x
  2. Step 2: Convert to fraction form
    138,555.09/207,831.38 = 43,785.29/x
  3. Step 3: Cross multiply
    138,555.09x = 207,831.38 × 43,785.29
  4. Step 4: Simplify right side
    138,555.09x = 9,099,957,244.40
  5. Step 5: Solve for x
    x = 9,099,957,244.40/138,555.09
  6. Step 6: Final answer
    x = 65,677.54

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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.