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Finding the Fourth Proportional to 127.02, 174.26 and 123.96

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Solution

The fourth proportional to 127.02, 174.26 and 123.96 is: 170.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.02 : 174.26 = 123.96 : x
  2. Step 2: Convert to fraction form
    127.02/174.26 = 123.96/x
  3. Step 3: Cross multiply
    127.02x = 174.26 × 123.96
  4. Step 4: Simplify right side
    127.02x = 21,600.65
  5. Step 5: Solve for x
    x = 21,600.65/127.02
  6. Step 6: Final answer
    x = 170.06

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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.