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Finding the Fourth Proportional to 127.89, 192.76 and 110.07

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Solution

The fourth proportional to 127.89, 192.76 and 110.07 is: 165.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.89 : 192.76 = 110.07 : x
  2. Step 2: Convert to fraction form
    127.89/192.76 = 110.07/x
  3. Step 3: Cross multiply
    127.89x = 192.76 × 110.07
  4. Step 4: Simplify right side
    127.89x = 21,216.82
  5. Step 5: Solve for x
    x = 21,216.82/127.89
  6. Step 6: Final answer
    x = 165.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.