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Finding the Fourth Proportional to 88.34, 132.45 and 71.19

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Solution

The fourth proportional to 88.34, 132.45 and 71.19 is: 106.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.34 : 132.45 = 71.19 : x
  2. Step 2: Convert to fraction form
    88.34/132.45 = 71.19/x
  3. Step 3: Cross multiply
    88.34x = 132.45 × 71.19
  4. Step 4: Simplify right side
    88.34x = 9,429.12
  5. Step 5: Solve for x
    x = 9,429.12/88.34
  6. Step 6: Final answer
    x = 106.74

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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.