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Finding the Fourth Proportional to 127.03, 175.12 and 104.82

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Solution

The fourth proportional to 127.03, 175.12 and 104.82 is: 144.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.03 : 175.12 = 104.82 : x
  2. Step 2: Convert to fraction form
    127.03/175.12 = 104.82/x
  3. Step 3: Cross multiply
    127.03x = 175.12 × 104.82
  4. Step 4: Simplify right side
    127.03x = 18,355.82
  5. Step 5: Solve for x
    x = 18,355.82/127.03
  6. Step 6: Final answer
    x = 144.50

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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.