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Finding the Fourth Proportional to 144.93, 200.19 and 120.49

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Solution

The fourth proportional to 144.93, 200.19 and 120.49 is: 166.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.93 : 200.19 = 120.49 : x
  2. Step 2: Convert to fraction form
    144.93/200.19 = 120.49/x
  3. Step 3: Cross multiply
    144.93x = 200.19 × 120.49
  4. Step 4: Simplify right side
    144.93x = 24,120.89
  5. Step 5: Solve for x
    x = 24,120.89/144.93
  6. Step 6: Final answer
    x = 166.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.