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Finding the Fourth Proportional to 111.58, 166.46 and 108.44

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Solution

The fourth proportional to 111.58, 166.46 and 108.44 is: 161.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.58 : 166.46 = 108.44 : x
  2. Step 2: Convert to fraction form
    111.58/166.46 = 108.44/x
  3. Step 3: Cross multiply
    111.58x = 166.46 × 108.44
  4. Step 4: Simplify right side
    111.58x = 18,050.25
  5. Step 5: Solve for x
    x = 18,050.25/111.58
  6. Step 6: Final answer
    x = 161.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.