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Finding the Fourth Proportional to 127.16, 190.86 and 110.12

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Solution

The fourth proportional to 127.16, 190.86 and 110.12 is: 165.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.16 : 190.86 = 110.12 : x
  2. Step 2: Convert to fraction form
    127.16/190.86 = 110.12/x
  3. Step 3: Cross multiply
    127.16x = 190.86 × 110.12
  4. Step 4: Simplify right side
    127.16x = 21,017.50
  5. Step 5: Solve for x
    x = 21,017.50/127.16
  6. Step 6: Final answer
    x = 165.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.