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Finding the Fourth Proportional to 88,248.60, 132,372.90 and 86,790.60

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Solution

The fourth proportional to 88,248.60, 132,372.90 and 86,790.60 is: 130,185.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,248.60 : 132,372.90 = 86,790.60 : x
  2. Step 2: Convert to fraction form
    88,248.60/132,372.90 = 86,790.60/x
  3. Step 3: Cross multiply
    88,248.60x = 132,372.90 × 86,790.60
  4. Step 4: Simplify right side
    88,248.60x = 11,488,723,414.74
  5. Step 5: Solve for x
    x = 11,488,723,414.74/88,248.60
  6. Step 6: Final answer
    x = 130,185.90

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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.