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Finding the Fourth Proportional to 108,877.46, 163,163.02 and 86,591.92

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Solution

The fourth proportional to 108,877.46, 163,163.02 and 86,591.92 is: 129,766.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,877.46 : 163,163.02 = 86,591.92 : x
  2. Step 2: Convert to fraction form
    108,877.46/163,163.02 = 86,591.92/x
  3. Step 3: Cross multiply
    108,877.46x = 163,163.02 × 86,591.92
  4. Step 4: Simplify right side
    108,877.46x = 14,128,599,174.80
  5. Step 5: Solve for x
    x = 14,128,599,174.80/108,877.46
  6. Step 6: Final answer
    x = 129,766.06

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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.