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Finding the Fourth Proportional to 144.60, 199.62 and 109.59

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Solution

The fourth proportional to 144.60, 199.62 and 109.59 is: 151.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.60 : 199.62 = 109.59 : x
  2. Step 2: Convert to fraction form
    144.60/199.62 = 109.59/x
  3. Step 3: Cross multiply
    144.60x = 199.62 × 109.59
  4. Step 4: Simplify right side
    144.60x = 21,876.36
  5. Step 5: Solve for x
    x = 21,876.36/144.60
  6. Step 6: Final answer
    x = 151.29

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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.