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Finding the Fourth Proportional to 127.68, 176.31 and 94.89

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Solution

The fourth proportional to 127.68, 176.31 and 94.89 is: 131.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.68 : 176.31 = 94.89 : x
  2. Step 2: Convert to fraction form
    127.68/176.31 = 94.89/x
  3. Step 3: Cross multiply
    127.68x = 176.31 × 94.89
  4. Step 4: Simplify right side
    127.68x = 16,730.06
  5. Step 5: Solve for x
    x = 16,730.06/127.68
  6. Step 6: Final answer
    x = 131.03

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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.