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Finding the Third Proportional to 68,728 and 146,528

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Solution

The third proportional to 68,728 and 146,528 is: 312,397.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,728 : 146,528 = 146,528 : x
  2. Step 2: Convert to fraction form
    68,728/146,528 = 146,528/x
  3. Step 3: Cross multiply
    68,728x = 146,528 × 146,528
  4. Step 4: Simplify right side
    68,728x = 21,470,454,784
  5. Step 5: Solve for x
    x = 21,470,454,784/68,728
  6. Step 6: Final answer
    x = 312,397.49

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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.