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Finding the Fourth Proportional to 119.45, 179.07 and 61.67

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Solution

The fourth proportional to 119.45, 179.07 and 61.67 is: 92.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.45 : 179.07 = 61.67 : x
  2. Step 2: Convert to fraction form
    119.45/179.07 = 61.67/x
  3. Step 3: Cross multiply
    119.45x = 179.07 × 61.67
  4. Step 4: Simplify right side
    119.45x = 11,042.35
  5. Step 5: Solve for x
    x = 11,042.35/119.45
  6. Step 6: Final answer
    x = 92.45

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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.