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Finding the Fourth Proportional to 127.36, 192.20 and 122.62

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Solution

The fourth proportional to 127.36, 192.20 and 122.62 is: 185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.36 : 192.20 = 122.62 : x
  2. Step 2: Convert to fraction form
    127.36/192.20 = 122.62/x
  3. Step 3: Cross multiply
    127.36x = 192.20 × 122.62
  4. Step 4: Simplify right side
    127.36x = 23,567.56
  5. Step 5: Solve for x
    x = 23,567.56/127.36
  6. Step 6: Final answer
    x = 185.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.