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Finding the Fourth Proportional to 127.69, 175.83 and 94.88

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Solution

The fourth proportional to 127.69, 175.83 and 94.88 is: 130.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.69 : 175.83 = 94.88 : x
  2. Step 2: Convert to fraction form
    127.69/175.83 = 94.88/x
  3. Step 3: Cross multiply
    127.69x = 175.83 × 94.88
  4. Step 4: Simplify right side
    127.69x = 16,682.75
  5. Step 5: Solve for x
    x = 16,682.75/127.69
  6. Step 6: Final answer
    x = 130.66

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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.