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Finding the Third Proportional to 76,717.50 and 168,603

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Solution

The third proportional to 76,717.50 and 168,603 is: 370,540.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,717.50 : 168,603 = 168,603 : x
  2. Step 2: Convert to fraction form
    76,717.50/168,603 = 168,603/x
  3. Step 3: Cross multiply
    76,717.50x = 168,603 × 168,603
  4. Step 4: Simplify right side
    76,717.50x = 28,426,971,609
  5. Step 5: Solve for x
    x = 28,426,971,609/76,717.50
  6. Step 6: Final answer
    x = 370,540.90

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.