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Finding the Third Proportional to 68,140 and 146,636

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Solution

The third proportional to 68,140 and 146,636 is: 315,557.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,140 : 146,636 = 146,636 : x
  2. Step 2: Convert to fraction form
    68,140/146,636 = 146,636/x
  3. Step 3: Cross multiply
    68,140x = 146,636 × 146,636
  4. Step 4: Simplify right side
    68,140x = 21,502,116,496
  5. Step 5: Solve for x
    x = 21,502,116,496/68,140
  6. Step 6: Final answer
    x = 315,557.92

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.