Home / 185,508.06-278,299.65-78,891.78

Finding the Fourth Proportional to 185,508.06, 278,299.65 and 78,891.78

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Solution

The fourth proportional to 185,508.06, 278,299.65 and 78,891.78 is: 118,353.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,508.06 : 278,299.65 = 78,891.78 : x
  2. Step 2: Convert to fraction form
    185,508.06/278,299.65 = 78,891.78/x
  3. Step 3: Cross multiply
    185,508.06x = 278,299.65 × 78,891.78
  4. Step 4: Simplify right side
    185,508.06x = 21,955,554,761.88
  5. Step 5: Solve for x
    x = 21,955,554,761.88/185,508.06
  6. Step 6: Final answer
    x = 118,353.64

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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.