Home / 231,023.06-318,815.73-129,057.46

Finding the Fourth Proportional to 231,023.06, 318,815.73 and 129,057.46

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Solution

The fourth proportional to 231,023.06, 318,815.73 and 129,057.46 is: 178,101.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,023.06 : 318,815.73 = 129,057.46 : x
  2. Step 2: Convert to fraction form
    231,023.06/318,815.73 = 129,057.46/x
  3. Step 3: Cross multiply
    231,023.06x = 318,815.73 × 129,057.46
  4. Step 4: Simplify right side
    231,023.06x = 41,145,548,321.85
  5. Step 5: Solve for x
    x = 41,145,548,321.85/231,023.06
  6. Step 6: Final answer
    x = 178,101.48

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1.5x scale

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.