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Finding the Fourth Proportional to 127.73, 190.43 and 124.53

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Solution

The fourth proportional to 127.73, 190.43 and 124.53 is: 185.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.73 : 190.43 = 124.53 : x
  2. Step 2: Convert to fraction form
    127.73/190.43 = 124.53/x
  3. Step 3: Cross multiply
    127.73x = 190.43 × 124.53
  4. Step 4: Simplify right side
    127.73x = 23,713.63
  5. Step 5: Solve for x
    x = 23,713.63/127.73
  6. Step 6: Final answer
    x = 185.66

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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.