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Finding the Fourth Proportional to 135,687.88, 203,544.78 and 60,805

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Solution

The fourth proportional to 135,687.88, 203,544.78 and 60,805 is: 91,213.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,687.88 : 203,544.78 = 60,805 : x
  2. Step 2: Convert to fraction form
    135,687.88/203,544.78 = 60,805/x
  3. Step 3: Cross multiply
    135,687.88x = 203,544.78 × 60,805
  4. Step 4: Simplify right side
    135,687.88x = 12,376,540,347.90
  5. Step 5: Solve for x
    x = 12,376,540,347.90/135,687.88
  6. Step 6: Final answer
    x = 91,213.31

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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.