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Finding the Fourth Proportional to 127.93, 175.40 and 125.62

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Solution

The fourth proportional to 127.93, 175.40 and 125.62 is: 172.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.93 : 175.40 = 125.62 : x
  2. Step 2: Convert to fraction form
    127.93/175.40 = 125.62/x
  3. Step 3: Cross multiply
    127.93x = 175.40 × 125.62
  4. Step 4: Simplify right side
    127.93x = 22,033.15
  5. Step 5: Solve for x
    x = 22,033.15/127.93
  6. Step 6: Final answer
    x = 172.23

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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.