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Finding the Fourth Proportional to 142.07, 195.93 and 127.49

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Solution

The fourth proportional to 142.07, 195.93 and 127.49 is: 175.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142.07 : 195.93 = 127.49 : x
  2. Step 2: Convert to fraction form
    142.07/195.93 = 127.49/x
  3. Step 3: Cross multiply
    142.07x = 195.93 × 127.49
  4. Step 4: Simplify right side
    142.07x = 24,978.14
  5. Step 5: Solve for x
    x = 24,978.14/142.07
  6. Step 6: Final answer
    x = 175.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.