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Finding the Fourth Proportional to 127.36, 190.12 and 123.08

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Solution

The fourth proportional to 127.36, 190.12 and 123.08 is: 183.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.36 : 190.12 = 123.08 : x
  2. Step 2: Convert to fraction form
    127.36/190.12 = 123.08/x
  3. Step 3: Cross multiply
    127.36x = 190.12 × 123.08
  4. Step 4: Simplify right side
    127.36x = 23,399.97
  5. Step 5: Solve for x
    x = 23,399.97/127.36
  6. Step 6: Final answer
    x = 183.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.