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Finding the Fourth Proportional to 88,978.30, 133,467.45 and 88,459.90

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Solution

The fourth proportional to 88,978.30, 133,467.45 and 88,459.90 is: 132,689.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,978.30 : 133,467.45 = 88,459.90 : x
  2. Step 2: Convert to fraction form
    88,978.30/133,467.45 = 88,459.90/x
  3. Step 3: Cross multiply
    88,978.30x = 133,467.45 × 88,459.90
  4. Step 4: Simplify right side
    88,978.30x = 11,806,517,280.26
  5. Step 5: Solve for x
    x = 11,806,517,280.26/88,978.30
  6. Step 6: Final answer
    x = 132,689.85

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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.