Home / 168,076.40-231,928.97-100,079.87

Finding the Fourth Proportional to 168,076.40, 231,928.97 and 100,079.87

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Solution

The fourth proportional to 168,076.40, 231,928.97 and 100,079.87 is: 138,100.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,076.40 : 231,928.97 = 100,079.87 : x
  2. Step 2: Convert to fraction form
    168,076.40/231,928.97 = 100,079.87/x
  3. Step 3: Cross multiply
    168,076.40x = 231,928.97 × 100,079.87
  4. Step 4: Simplify right side
    168,076.40x = 23,211,419,506.79
  5. Step 5: Solve for x
    x = 23,211,419,506.79/168,076.40
  6. Step 6: Final answer
    x = 138,100.41

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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.