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Finding the Third Proportional to 75,400 and 163,916

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Solution

The third proportional to 75,400 and 163,916 is: 356,345.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,400 : 163,916 = 163,916 : x
  2. Step 2: Convert to fraction form
    75,400/163,916 = 163,916/x
  3. Step 3: Cross multiply
    75,400x = 163,916 × 163,916
  4. Step 4: Simplify right side
    75,400x = 26,868,455,056
  5. Step 5: Solve for x
    x = 26,868,455,056/75,400
  6. Step 6: Final answer
    x = 356,345.56

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.