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Finding the Fourth Proportional to 114.11, 171.39 and 111.07

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Solution

The fourth proportional to 114.11, 171.39 and 111.07 is: 166.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.11 : 171.39 = 111.07 : x
  2. Step 2: Convert to fraction form
    114.11/171.39 = 111.07/x
  3. Step 3: Cross multiply
    114.11x = 171.39 × 111.07
  4. Step 4: Simplify right side
    114.11x = 19,035.43
  5. Step 5: Solve for x
    x = 19,035.43/114.11
  6. Step 6: Final answer
    x = 166.82

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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.