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Finding the Third Proportional to 77,720 and 170,992

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Solution

The third proportional to 77,720 and 170,992 is: 376,200.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,720 : 170,992 = 170,992 : x
  2. Step 2: Convert to fraction form
    77,720/170,992 = 170,992/x
  3. Step 3: Cross multiply
    77,720x = 170,992 × 170,992
  4. Step 4: Simplify right side
    77,720x = 29,238,264,064
  5. Step 5: Solve for x
    x = 29,238,264,064/77,720
  6. Step 6: Final answer
    x = 376,200.00

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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.