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Finding the Fourth Proportional to 108,006.40, 161,815.20 and 88,177.60

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Solution

The fourth proportional to 108,006.40, 161,815.20 and 88,177.60 is: 132,107.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,006.40 : 161,815.20 = 88,177.60 : x
  2. Step 2: Convert to fraction form
    108,006.40/161,815.20 = 88,177.60/x
  3. Step 3: Cross multiply
    108,006.40x = 161,815.20 × 88,177.60
  4. Step 4: Simplify right side
    108,006.40x = 14,268,475,979.52
  5. Step 5: Solve for x
    x = 14,268,475,979.52/108,006.40
  6. Step 6: Final answer
    x = 132,107.69

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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.