Home / 231,821.92-319,922.12-129,851.76

Finding the Fourth Proportional to 231,821.92, 319,922.12 and 129,851.76

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Solution

The fourth proportional to 231,821.92, 319,922.12 and 129,851.76 is: 179,199.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,821.92 : 319,922.12 = 129,851.76 : x
  2. Step 2: Convert to fraction form
    231,821.92/319,922.12 = 129,851.76/x
  3. Step 3: Cross multiply
    231,821.92x = 319,922.12 × 129,851.76
  4. Step 4: Simplify right side
    231,821.92x = 41,542,450,344.93
  5. Step 5: Solve for x
    x = 41,542,450,344.93/231,821.92
  6. Step 6: Final answer
    x = 179,199.84

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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.