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Finding the Fourth Proportional to 144.80, 199.84 and 93.12

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Solution

The fourth proportional to 144.80, 199.84 and 93.12 is: 128.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.80 : 199.84 = 93.12 : x
  2. Step 2: Convert to fraction form
    144.80/199.84 = 93.12/x
  3. Step 3: Cross multiply
    144.80x = 199.84 × 93.12
  4. Step 4: Simplify right side
    144.80x = 18,609.10
  5. Step 5: Solve for x
    x = 18,609.10/144.80
  6. Step 6: Final answer
    x = 128.52

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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.