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Finding the Fourth Proportional to 111.93, 167.67 and 83.07

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Solution

The fourth proportional to 111.93, 167.67 and 83.07 is: 124.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.93 : 167.67 = 83.07 : x
  2. Step 2: Convert to fraction form
    111.93/167.67 = 83.07/x
  3. Step 3: Cross multiply
    111.93x = 167.67 × 83.07
  4. Step 4: Simplify right side
    111.93x = 13,928.35
  5. Step 5: Solve for x
    x = 13,928.35/111.93
  6. Step 6: Final answer
    x = 124.44

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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.