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Finding the Third Proportional to 68,236 and 146,840

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Solution

The third proportional to 68,236 and 146,840 is: 315,991.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,236 : 146,840 = 146,840 : x
  2. Step 2: Convert to fraction form
    68,236/146,840 = 146,840/x
  3. Step 3: Cross multiply
    68,236x = 146,840 × 146,840
  4. Step 4: Simplify right side
    68,236x = 21,561,985,600
  5. Step 5: Solve for x
    x = 21,561,985,600/68,236
  6. Step 6: Final answer
    x = 315,991.35

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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.