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Finding the Fourth Proportional to 119.10, 164.41 and 92.82

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Solution

The fourth proportional to 119.10, 164.41 and 92.82 is: 128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.10 : 164.41 = 92.82 : x
  2. Step 2: Convert to fraction form
    119.10/164.41 = 92.82/x
  3. Step 3: Cross multiply
    119.10x = 164.41 × 92.82
  4. Step 4: Simplify right side
    119.10x = 15,260.54
  5. Step 5: Solve for x
    x = 15,260.54/119.10
  6. Step 6: Final answer
    x = 128.13

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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.