Home / 252,751.28-378,857.18-126,142.20

Finding the Fourth Proportional to 252,751.28, 378,857.18 and 126,142.20

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Solution

The fourth proportional to 252,751.28, 378,857.18 and 126,142.20 is: 189,078.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,751.28 : 378,857.18 = 126,142.20 : x
  2. Step 2: Convert to fraction form
    252,751.28/378,857.18 = 126,142.20/x
  3. Step 3: Cross multiply
    252,751.28x = 378,857.18 × 126,142.20
  4. Step 4: Simplify right side
    252,751.28x = 47,789,877,540.29
  5. Step 5: Solve for x
    x = 47,789,877,540.29/252,751.28
  6. Step 6: Final answer
    x = 189,078.68

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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.