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Finding the Fourth Proportional to 127.04, 174.38 and 124.74

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Solution

The fourth proportional to 127.04, 174.38 and 124.74 is: 171.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.04 : 174.38 = 124.74 : x
  2. Step 2: Convert to fraction form
    127.04/174.38 = 124.74/x
  3. Step 3: Cross multiply
    127.04x = 174.38 × 124.74
  4. Step 4: Simplify right side
    127.04x = 21,751.54
  5. Step 5: Solve for x
    x = 21,751.54/127.04
  6. Step 6: Final answer
    x = 171.22

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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.