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Finding the Fourth Proportional to 95,639.60, 143,286.60 and 81,815.60

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Solution

The fourth proportional to 95,639.60, 143,286.60 and 81,815.60 is: 122,575.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,639.60 : 143,286.60 = 81,815.60 : x
  2. Step 2: Convert to fraction form
    95,639.60/143,286.60 = 81,815.60/x
  3. Step 3: Cross multiply
    95,639.60x = 143,286.60 × 81,815.60
  4. Step 4: Simplify right side
    95,639.60x = 11,723,079,150.96
  5. Step 5: Solve for x
    x = 11,723,079,150.96/95,639.60
  6. Step 6: Final answer
    x = 122,575.58

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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.