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Finding the Fourth Proportional to 204,107.63, 306,056.48 and 91,691.42

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Solution

The fourth proportional to 204,107.63, 306,056.48 and 91,691.42 is: 137,489.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,107.63 : 306,056.48 = 91,691.42 : x
  2. Step 2: Convert to fraction form
    204,107.63/306,056.48 = 91,691.42/x
  3. Step 3: Cross multiply
    204,107.63x = 306,056.48 × 91,691.42
  4. Step 4: Simplify right side
    204,107.63x = 28,062,751,262.66
  5. Step 5: Solve for x
    x = 28,062,751,262.66/204,107.63
  6. Step 6: Final answer
    x = 137,489.97

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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.