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Finding the Third Proportional to 136,502 and 206,663

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Solution

The third proportional to 136,502 and 206,663 is: 312,886.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,502 : 206,663 = 206,663 : x
  2. Step 2: Convert to fraction form
    136,502/206,663 = 206,663/x
  3. Step 3: Cross multiply
    136,502x = 206,663 × 206,663
  4. Step 4: Simplify right side
    136,502x = 42,709,595,569
  5. Step 5: Solve for x
    x = 42,709,595,569/136,502
  6. Step 6: Final answer
    x = 312,886.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.