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Finding the Third Proportional to 70,728 and 161,284

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Solution

The third proportional to 70,728 and 161,284 is: 367,782.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,728 : 161,284 = 161,284 : x
  2. Step 2: Convert to fraction form
    70,728/161,284 = 161,284/x
  3. Step 3: Cross multiply
    70,728x = 161,284 × 161,284
  4. Step 4: Simplify right side
    70,728x = 26,012,528,656
  5. Step 5: Solve for x
    x = 26,012,528,656/70,728
  6. Step 6: Final answer
    x = 367,782.61

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.