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Finding the Fourth Proportional to 144.16, 216.03 and 123.49

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Solution

The fourth proportional to 144.16, 216.03 and 123.49 is: 185.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.16 : 216.03 = 123.49 : x
  2. Step 2: Convert to fraction form
    144.16/216.03 = 123.49/x
  3. Step 3: Cross multiply
    144.16x = 216.03 × 123.49
  4. Step 4: Simplify right side
    144.16x = 26,676.46
  5. Step 5: Solve for x
    x = 26,676.46/144.16
  6. Step 6: Final answer
    x = 185.04

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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.