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Finding the Third Proportional to 79,776 and 169,272

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Solution

The third proportional to 79,776 and 169,272 is: 359,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,776 : 169,272 = 169,272 : x
  2. Step 2: Convert to fraction form
    79,776/169,272 = 169,272/x
  3. Step 3: Cross multiply
    79,776x = 169,272 × 169,272
  4. Step 4: Simplify right side
    79,776x = 28,653,009,984
  5. Step 5: Solve for x
    x = 28,653,009,984/79,776
  6. Step 6: Final answer
    x = 359,168.30

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.