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Finding the Fourth Proportional to 166.11, 248.81 and 105.14

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Solution

The fourth proportional to 166.11, 248.81 and 105.14 is: 157.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.11 : 248.81 = 105.14 : x
  2. Step 2: Convert to fraction form
    166.11/248.81 = 105.14/x
  3. Step 3: Cross multiply
    166.11x = 248.81 × 105.14
  4. Step 4: Simplify right side
    166.11x = 26,158.11
  5. Step 5: Solve for x
    x = 26,158.11/166.11
  6. Step 6: Final answer
    x = 157.47

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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.