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Finding the Fourth Proportional to 127.01, 174.98 and 94.21

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Solution

The fourth proportional to 127.01, 174.98 and 94.21 is: 129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.01 : 174.98 = 94.21 : x
  2. Step 2: Convert to fraction form
    127.01/174.98 = 94.21/x
  3. Step 3: Cross multiply
    127.01x = 174.98 × 94.21
  4. Step 4: Simplify right side
    127.01x = 16,484.66
  5. Step 5: Solve for x
    x = 16,484.66/127.01
  6. Step 6: Final answer
    x = 129.79

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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.