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Finding the Fourth Proportional to 111.33, 166.03 and 105.27

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Solution

The fourth proportional to 111.33, 166.03 and 105.27 is: 156.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.33 : 166.03 = 105.27 : x
  2. Step 2: Convert to fraction form
    111.33/166.03 = 105.27/x
  3. Step 3: Cross multiply
    111.33x = 166.03 × 105.27
  4. Step 4: Simplify right side
    111.33x = 17,476.62
  5. Step 5: Solve for x
    x = 17,476.62/111.33
  6. Step 6: Final answer
    x = 156.98

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