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Finding the Fourth Proportional to 144.48, 199.60 and 116.43

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Solution

The fourth proportional to 144.48, 199.60 and 116.43 is: 160.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.48 : 199.60 = 116.43 : x
  2. Step 2: Convert to fraction form
    144.48/199.60 = 116.43/x
  3. Step 3: Cross multiply
    144.48x = 199.60 × 116.43
  4. Step 4: Simplify right side
    144.48x = 23,239.67
  5. Step 5: Solve for x
    x = 23,239.67/144.48
  6. Step 6: Final answer
    x = 160.85

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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.