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Finding the Third Proportional to 78,116 and 161,768

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Solution

The third proportional to 78,116 and 161,768 is: 335,000.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,116 : 161,768 = 161,768 : x
  2. Step 2: Convert to fraction form
    78,116/161,768 = 161,768/x
  3. Step 3: Cross multiply
    78,116x = 161,768 × 161,768
  4. Step 4: Simplify right side
    78,116x = 26,168,885,824
  5. Step 5: Solve for x
    x = 26,168,885,824/78,116
  6. Step 6: Final answer
    x = 335,000.33

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.