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Finding the Third Proportional to 68,720 and 146,440

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Solution

The third proportional to 68,720 and 146,440 is: 312,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,720 : 146,440 = 146,440 : x
  2. Step 2: Convert to fraction form
    68,720/146,440 = 146,440/x
  3. Step 3: Cross multiply
    68,720x = 146,440 × 146,440
  4. Step 4: Simplify right side
    68,720x = 21,444,673,600
  5. Step 5: Solve for x
    x = 21,444,673,600/68,720
  6. Step 6: Final answer
    x = 312,058.70

Related Problems

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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.