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Finding the Fourth Proportional to 89,176.40, 132,978.62 and 88,376.96

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Solution

The fourth proportional to 89,176.40, 132,978.62 and 88,376.96 is: 131,786.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,176.40 : 132,978.62 = 88,376.96 : x
  2. Step 2: Convert to fraction form
    89,176.40/132,978.62 = 88,376.96/x
  3. Step 3: Cross multiply
    89,176.40x = 132,978.62 × 88,376.96
  4. Step 4: Simplify right side
    89,176.40x = 11,752,246,180.60
  5. Step 5: Solve for x
    x = 11,752,246,180.60/89,176.40
  6. Step 6: Final answer
    x = 131,786.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.