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Finding the Fourth Proportional to 119.48, 164.76 and 94.90

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Solution

The fourth proportional to 119.48, 164.76 and 94.90 is: 130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.48 : 164.76 = 94.90 : x
  2. Step 2: Convert to fraction form
    119.48/164.76 = 94.90/x
  3. Step 3: Cross multiply
    119.48x = 164.76 × 94.90
  4. Step 4: Simplify right side
    119.48x = 15,635.72
  5. Step 5: Solve for x
    x = 15,635.72/119.48
  6. Step 6: Final answer
    x = 130.86

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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.