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Finding the Fourth Proportional to 144.39, 199.08 and 136.70

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Solution

The fourth proportional to 144.39, 199.08 and 136.70 is: 188.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.39 : 199.08 = 136.70 : x
  2. Step 2: Convert to fraction form
    144.39/199.08 = 136.70/x
  3. Step 3: Cross multiply
    144.39x = 199.08 × 136.70
  4. Step 4: Simplify right side
    144.39x = 27,214.24
  5. Step 5: Solve for x
    x = 27,214.24/144.39
  6. Step 6: Final answer
    x = 188.48

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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.