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Finding the Fourth Proportional to 135,591.66, 203,067.54 and 68,866.32

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Solution

The fourth proportional to 135,591.66, 203,067.54 and 68,866.32 is: 103,136.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,591.66 : 203,067.54 = 68,866.32 : x
  2. Step 2: Convert to fraction form
    135,591.66/203,067.54 = 68,866.32/x
  3. Step 3: Cross multiply
    135,591.66x = 203,067.54 × 68,866.32
  4. Step 4: Simplify right side
    135,591.66x = 13,984,514,191.25
  5. Step 5: Solve for x
    x = 13,984,514,191.25/135,591.66
  6. Step 6: Final answer
    x = 103,136.98

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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.