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Finding the Fourth Proportional to 88.70, 132.81 and 73.43

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Solution

The fourth proportional to 88.70, 132.81 and 73.43 is: 109.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.70 : 132.81 = 73.43 : x
  2. Step 2: Convert to fraction form
    88.70/132.81 = 73.43/x
  3. Step 3: Cross multiply
    88.70x = 132.81 × 73.43
  4. Step 4: Simplify right side
    88.70x = 9,752.79
  5. Step 5: Solve for x
    x = 9,752.79/88.70
  6. Step 6: Final answer
    x = 109.96

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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.