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Finding the Third Proportional to 68,721.75 and 146,130.75

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Solution

The third proportional to 68,721.75 and 146,130.75 is: 310,734.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,721.75 : 146,130.75 = 146,130.75 : x
  2. Step 2: Convert to fraction form
    68,721.75/146,130.75 = 146,130.75/x
  3. Step 3: Cross multiply
    68,721.75x = 146,130.75 × 146,130.75
  4. Step 4: Simplify right side
    68,721.75x = 21,354,196,095.56
  5. Step 5: Solve for x
    x = 21,354,196,095.56/68,721.75
  6. Step 6: Final answer
    x = 310,734.17

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.