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Finding the Third Proportional to 136,746 and 209,907

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Solution

The third proportional to 136,746 and 209,907 is: 322,210.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,746 : 209,907 = 209,907 : x
  2. Step 2: Convert to fraction form
    136,746/209,907 = 209,907/x
  3. Step 3: Cross multiply
    136,746x = 209,907 × 209,907
  4. Step 4: Simplify right side
    136,746x = 44,060,948,649
  5. Step 5: Solve for x
    x = 44,060,948,649/136,746
  6. Step 6: Final answer
    x = 322,210.15

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.