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Finding the Fourth Proportional to 135,969.72, 187,650.87 and 82,267.92

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Solution

The fourth proportional to 135,969.72, 187,650.87 and 82,267.92 is: 113,537.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,969.72 : 187,650.87 = 82,267.92 : x
  2. Step 2: Convert to fraction form
    135,969.72/187,650.87 = 82,267.92/x
  3. Step 3: Cross multiply
    135,969.72x = 187,650.87 × 82,267.92
  4. Step 4: Simplify right side
    135,969.72x = 15,437,646,761.09
  5. Step 5: Solve for x
    x = 15,437,646,761.09/135,969.72
  6. Step 6: Final answer
    x = 113,537.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.