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Finding the Fourth Proportional to 127.77, 192.36 and 110.15

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Solution

The fourth proportional to 127.77, 192.36 and 110.15 is: 165.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.77 : 192.36 = 110.15 : x
  2. Step 2: Convert to fraction form
    127.77/192.36 = 110.15/x
  3. Step 3: Cross multiply
    127.77x = 192.36 × 110.15
  4. Step 4: Simplify right side
    127.77x = 21,188.45
  5. Step 5: Solve for x
    x = 21,188.45/127.77
  6. Step 6: Final answer
    x = 165.83

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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.