Home / 279,126.20-418,694.14-79,451.72

Finding the Fourth Proportional to 279,126.20, 418,694.14 and 79,451.72

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Solution

The fourth proportional to 279,126.20, 418,694.14 and 79,451.72 is: 119,178.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,126.20 : 418,694.14 = 79,451.72 : x
  2. Step 2: Convert to fraction form
    279,126.20/418,694.14 = 79,451.72/x
  3. Step 3: Cross multiply
    279,126.20x = 418,694.14 × 79,451.72
  4. Step 4: Simplify right side
    279,126.20x = 33,265,969,576.92
  5. Step 5: Solve for x
    x = 33,265,969,576.92/279,126.20
  6. Step 6: Final answer
    x = 119,178.96

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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.