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Finding the Third Proportional to 78,460.50 and 161,057

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Solution

The third proportional to 78,460.50 and 161,057 is: 330,604.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,460.50 : 161,057 = 161,057 : x
  2. Step 2: Convert to fraction form
    78,460.50/161,057 = 161,057/x
  3. Step 3: Cross multiply
    78,460.50x = 161,057 × 161,057
  4. Step 4: Simplify right side
    78,460.50x = 25,939,357,249
  5. Step 5: Solve for x
    x = 25,939,357,249/78,460.50
  6. Step 6: Final answer
    x = 330,604.03

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.