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Finding the Third Proportional to 76,628 and 126,633

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Solution

The third proportional to 76,628 and 126,633 is: 209,269.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,628 : 126,633 = 126,633 : x
  2. Step 2: Convert to fraction form
    76,628/126,633 = 126,633/x
  3. Step 3: Cross multiply
    76,628x = 126,633 × 126,633
  4. Step 4: Simplify right side
    76,628x = 16,035,916,689
  5. Step 5: Solve for x
    x = 16,035,916,689/76,628
  6. Step 6: Final answer
    x = 209,269.68

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.