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Finding the Fourth Proportional to 127.12, 190.38 and 94.56

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Solution

The fourth proportional to 127.12, 190.38 and 94.56 is: 141.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.12 : 190.38 = 94.56 : x
  2. Step 2: Convert to fraction form
    127.12/190.38 = 94.56/x
  3. Step 3: Cross multiply
    127.12x = 190.38 × 94.56
  4. Step 4: Simplify right side
    127.12x = 18,002.33
  5. Step 5: Solve for x
    x = 18,002.33/127.12
  6. Step 6: Final answer
    x = 141.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.