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Finding the Third Proportional to 77,276 and 162,856

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Solution

The third proportional to 77,276 and 162,856 is: 343,212.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,276 : 162,856 = 162,856 : x
  2. Step 2: Convert to fraction form
    77,276/162,856 = 162,856/x
  3. Step 3: Cross multiply
    77,276x = 162,856 × 162,856
  4. Step 4: Simplify right side
    77,276x = 26,522,076,736
  5. Step 5: Solve for x
    x = 26,522,076,736/77,276
  6. Step 6: Final answer
    x = 343,212.34

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.