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Finding the Fourth Proportional to 166.11, 228.87 and 123.92

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Solution

The fourth proportional to 166.11, 228.87 and 123.92 is: 170.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.11 : 228.87 = 123.92 : x
  2. Step 2: Convert to fraction form
    166.11/228.87 = 123.92/x
  3. Step 3: Cross multiply
    166.11x = 228.87 × 123.92
  4. Step 4: Simplify right side
    166.11x = 28,362.10
  5. Step 5: Solve for x
    x = 28,362.10/166.11
  6. Step 6: Final answer
    x = 170.74

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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.