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Finding the Third Proportional to 77,982.75 and 168,439.50

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Solution

The third proportional to 77,982.75 and 168,439.50 is: 363,822.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,982.75 : 168,439.50 = 168,439.50 : x
  2. Step 2: Convert to fraction form
    77,982.75/168,439.50 = 168,439.50/x
  3. Step 3: Cross multiply
    77,982.75x = 168,439.50 × 168,439.50
  4. Step 4: Simplify right side
    77,982.75x = 28,371,865,160.25
  5. Step 5: Solve for x
    x = 28,371,865,160.25/77,982.75
  6. Step 6: Final answer
    x = 363,822.32

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.