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Finding the Fourth Proportional to 119.45, 178.81 and 88.52

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Solution

The fourth proportional to 119.45, 178.81 and 88.52 is: 132.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.45 : 178.81 = 88.52 : x
  2. Step 2: Convert to fraction form
    119.45/178.81 = 88.52/x
  3. Step 3: Cross multiply
    119.45x = 178.81 × 88.52
  4. Step 4: Simplify right side
    119.45x = 15,827.65
  5. Step 5: Solve for x
    x = 15,827.65/119.45
  6. Step 6: Final answer
    x = 132.50

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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.