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Finding the Fourth Proportional to 112.80, 169.14 and 93.44

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Solution

The fourth proportional to 112.80, 169.14 and 93.44 is: 140.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.80 : 169.14 = 93.44 : x
  2. Step 2: Convert to fraction form
    112.80/169.14 = 93.44/x
  3. Step 3: Cross multiply
    112.80x = 169.14 × 93.44
  4. Step 4: Simplify right side
    112.80x = 15,804.44
  5. Step 5: Solve for x
    x = 15,804.44/112.80
  6. Step 6: Final answer
    x = 140.11

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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.