Home / 204,049.20-305,855.10-77,640.60

Finding the Fourth Proportional to 204,049.20, 305,855.10 and 77,640.60

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Solution

The fourth proportional to 204,049.20, 305,855.10 and 77,640.60 is: 116,377.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,049.20 : 305,855.10 = 77,640.60 : x
  2. Step 2: Convert to fraction form
    204,049.20/305,855.10 = 77,640.60/x
  3. Step 3: Cross multiply
    204,049.20x = 305,855.10 × 77,640.60
  4. Step 4: Simplify right side
    204,049.20x = 23,746,773,477.06
  5. Step 5: Solve for x
    x = 23,746,773,477.06/204,049.20
  6. Step 6: Final answer
    x = 116,377.68

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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.