Home / 204,772.74-306,951.08-78,380.61

Finding the Fourth Proportional to 204,772.74, 306,951.08 and 78,380.61

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Solution

The fourth proportional to 204,772.74, 306,951.08 and 78,380.61 is: 117,491.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,772.74 : 306,951.08 = 78,380.61 : x
  2. Step 2: Convert to fraction form
    204,772.74/306,951.08 = 78,380.61/x
  3. Step 3: Cross multiply
    204,772.74x = 306,951.08 × 78,380.61
  4. Step 4: Simplify right side
    204,772.74x = 24,059,012,498.66
  5. Step 5: Solve for x
    x = 24,059,012,498.66/204,772.74
  6. Step 6: Final answer
    x = 117,491.29

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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.