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Finding the Third Proportional to 68,445 and 105,138

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Solution

The third proportional to 68,445 and 105,138 is: 161,501.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,445 : 105,138 = 105,138 : x
  2. Step 2: Convert to fraction form
    68,445/105,138 = 105,138/x
  3. Step 3: Cross multiply
    68,445x = 105,138 × 105,138
  4. Step 4: Simplify right side
    68,445x = 11,053,999,044
  5. Step 5: Solve for x
    x = 11,053,999,044/68,445
  6. Step 6: Final answer
    x = 161,501.92

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.