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Finding the Fourth Proportional to 123.14, 185.54 and 101.95

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Solution

The fourth proportional to 123.14, 185.54 and 101.95 is: 153.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.14 : 185.54 = 101.95 : x
  2. Step 2: Convert to fraction form
    123.14/185.54 = 101.95/x
  3. Step 3: Cross multiply
    123.14x = 185.54 × 101.95
  4. Step 4: Simplify right side
    123.14x = 18,914.83
  5. Step 5: Solve for x
    x = 18,914.83/123.14
  6. Step 6: Final answer
    x = 153.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.