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Finding the Fourth Proportional to 204,159.20, 306,020.10 and 91,820.30

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Solution

The fourth proportional to 204,159.20, 306,020.10 and 91,820.30 is: 137,632.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,159.20 : 306,020.10 = 91,820.30 : x
  2. Step 2: Convert to fraction form
    204,159.20/306,020.10 = 91,820.30/x
  3. Step 3: Cross multiply
    204,159.20x = 306,020.10 × 91,820.30
  4. Step 4: Simplify right side
    204,159.20x = 28,098,857,388.03
  5. Step 5: Solve for x
    x = 28,098,857,388.03/204,159.20
  6. Step 6: Final answer
    x = 137,632.09

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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.