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Finding the Third Proportional to 77,973 and 168,389

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Solution

The third proportional to 77,973 and 168,389 is: 363,649.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,973 : 168,389 = 168,389 : x
  2. Step 2: Convert to fraction form
    77,973/168,389 = 168,389/x
  3. Step 3: Cross multiply
    77,973x = 168,389 × 168,389
  4. Step 4: Simplify right side
    77,973x = 28,354,855,321
  5. Step 5: Solve for x
    x = 28,354,855,321/77,973
  6. Step 6: Final answer
    x = 363,649.66

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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.