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Finding the Fourth Proportional to 123.62, 185.22 and 119.16

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Solution

The fourth proportional to 123.62, 185.22 and 119.16 is: 178.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.62 : 185.22 = 119.16 : x
  2. Step 2: Convert to fraction form
    123.62/185.22 = 119.16/x
  3. Step 3: Cross multiply
    123.62x = 185.22 × 119.16
  4. Step 4: Simplify right side
    123.62x = 22,070.82
  5. Step 5: Solve for x
    x = 22,070.82/123.62
  6. Step 6: Final answer
    x = 178.54

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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.