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Finding the Fourth Proportional to 123.53, 185.08 and 106.25

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Solution

The fourth proportional to 123.53, 185.08 and 106.25 is: 159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.53 : 185.08 = 106.25 : x
  2. Step 2: Convert to fraction form
    123.53/185.08 = 106.25/x
  3. Step 3: Cross multiply
    123.53x = 185.08 × 106.25
  4. Step 4: Simplify right side
    123.53x = 19,664.75
  5. Step 5: Solve for x
    x = 19,664.75/123.53
  6. Step 6: Final answer
    x = 159.19

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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.