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Finding the Fourth Proportional to 83,998.60, 125,882.70 and 68,446.60

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Solution

The fourth proportional to 83,998.60, 125,882.70 and 68,446.60 is: 102,576.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,998.60 : 125,882.70 = 68,446.60 : x
  2. Step 2: Convert to fraction form
    83,998.60/125,882.70 = 68,446.60/x
  3. Step 3: Cross multiply
    83,998.60x = 125,882.70 × 68,446.60
  4. Step 4: Simplify right side
    83,998.60x = 8,616,242,813.82
  5. Step 5: Solve for x
    x = 8,616,242,813.82/83,998.60
  6. Step 6: Final answer
    x = 102,576.03

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1.5x scale

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.