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Finding the Fourth Proportional to 127.73, 190.53 and 113.45

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Solution

The fourth proportional to 127.73, 190.53 and 113.45 is: 169.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.73 : 190.53 = 113.45 : x
  2. Step 2: Convert to fraction form
    127.73/190.53 = 113.45/x
  3. Step 3: Cross multiply
    127.73x = 190.53 × 113.45
  4. Step 4: Simplify right side
    127.73x = 21,615.43
  5. Step 5: Solve for x
    x = 21,615.43/127.73
  6. Step 6: Final answer
    x = 169.23

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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.