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Finding the Fourth Proportional to 127.73, 190.51 and 123.88

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Solution

The fourth proportional to 127.73, 190.51 and 123.88 is: 184.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.73 : 190.51 = 123.88 : x
  2. Step 2: Convert to fraction form
    127.73/190.51 = 123.88/x
  3. Step 3: Cross multiply
    127.73x = 190.51 × 123.88
  4. Step 4: Simplify right side
    127.73x = 23,600.38
  5. Step 5: Solve for x
    x = 23,600.38/127.73
  6. Step 6: Final answer
    x = 184.77

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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.