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Finding the Fourth Proportional to 119.18, 164.30 and 94.70

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Solution

The fourth proportional to 119.18, 164.30 and 94.70 is: 130.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.18 : 164.30 = 94.70 : x
  2. Step 2: Convert to fraction form
    119.18/164.30 = 94.70/x
  3. Step 3: Cross multiply
    119.18x = 164.30 × 94.70
  4. Step 4: Simplify right side
    119.18x = 15,559.21
  5. Step 5: Solve for x
    x = 15,559.21/119.18
  6. Step 6: Final answer
    x = 130.55

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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.