Home / 168,021.27-231,868.64-91,540.13

Finding the Fourth Proportional to 168,021.27, 231,868.64 and 91,540.13

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Solution

The fourth proportional to 168,021.27, 231,868.64 and 91,540.13 is: 126,324.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,021.27 : 231,868.64 = 91,540.13 : x
  2. Step 2: Convert to fraction form
    168,021.27/231,868.64 = 91,540.13/x
  3. Step 3: Cross multiply
    168,021.27x = 231,868.64 × 91,540.13
  4. Step 4: Simplify right side
    168,021.27x = 21,225,283,831.48
  5. Step 5: Solve for x
    x = 21,225,283,831.48/168,021.27
  6. Step 6: Final answer
    x = 126,324.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.