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Finding the Third Proportional to 113,685 and 178,344

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Solution

The third proportional to 113,685 and 178,344 is: 279,778.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,685 : 178,344 = 178,344 : x
  2. Step 2: Convert to fraction form
    113,685/178,344 = 178,344/x
  3. Step 3: Cross multiply
    113,685x = 178,344 × 178,344
  4. Step 4: Simplify right side
    113,685x = 31,806,582,336
  5. Step 5: Solve for x
    x = 31,806,582,336/113,685
  6. Step 6: Final answer
    x = 279,778.18

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.