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Finding the Fourth Proportional to 119.09, 179.28 and 92.36

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Solution

The fourth proportional to 119.09, 179.28 and 92.36 is: 139.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.09 : 179.28 = 92.36 : x
  2. Step 2: Convert to fraction form
    119.09/179.28 = 92.36/x
  3. Step 3: Cross multiply
    119.09x = 179.28 × 92.36
  4. Step 4: Simplify right side
    119.09x = 16,557.40
  5. Step 5: Solve for x
    x = 16,557.40/119.09
  6. Step 6: Final answer
    x = 139.04

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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.