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Finding the Fourth Proportional to 204,057.60, 306,129.60 and 61,891.20

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Solution

The fourth proportional to 204,057.60, 306,129.60 and 61,891.20 is: 92,849.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,057.60 : 306,129.60 = 61,891.20 : x
  2. Step 2: Convert to fraction form
    204,057.60/306,129.60 = 61,891.20/x
  3. Step 3: Cross multiply
    204,057.60x = 306,129.60 × 61,891.20
  4. Step 4: Simplify right side
    204,057.60x = 18,946,728,299.52
  5. Step 5: Solve for x
    x = 18,946,728,299.52/204,057.60
  6. Step 6: Final answer
    x = 92,849.90

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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.