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Finding the Third Proportional to 68,724 and 146,520

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Solution

The third proportional to 68,724 and 146,520 is: 312,381.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,724 : 146,520 = 146,520 : x
  2. Step 2: Convert to fraction form
    68,724/146,520 = 146,520/x
  3. Step 3: Cross multiply
    68,724x = 146,520 × 146,520
  4. Step 4: Simplify right side
    68,724x = 21,468,110,400
  5. Step 5: Solve for x
    x = 21,468,110,400/68,724
  6. Step 6: Final answer
    x = 312,381.56

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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.