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Finding the Fourth Proportional to 127.64, 175.18 and 124.04

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Solution

The fourth proportional to 127.64, 175.18 and 124.04 is: 170.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.64 : 175.18 = 124.04 : x
  2. Step 2: Convert to fraction form
    127.64/175.18 = 124.04/x
  3. Step 3: Cross multiply
    127.64x = 175.18 × 124.04
  4. Step 4: Simplify right side
    127.64x = 21,729.33
  5. Step 5: Solve for x
    x = 21,729.33/127.64
  6. Step 6: Final answer
    x = 170.24

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.