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Finding the Third Proportional to 79,715 and 108,318

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Solution

The third proportional to 79,715 and 108,318 is: 147,184.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,715 : 108,318 = 108,318 : x
  2. Step 2: Convert to fraction form
    79,715/108,318 = 108,318/x
  3. Step 3: Cross multiply
    79,715x = 108,318 × 108,318
  4. Step 4: Simplify right side
    79,715x = 11,732,789,124
  5. Step 5: Solve for x
    x = 11,732,789,124/79,715
  6. Step 6: Final answer
    x = 147,184.21

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.