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Finding the Third Proportional to 77,988.75 and 170,820.75

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Solution

The third proportional to 77,988.75 and 170,820.75 is: 374,153.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,988.75 : 170,820.75 = 170,820.75 : x
  2. Step 2: Convert to fraction form
    77,988.75/170,820.75 = 170,820.75/x
  3. Step 3: Cross multiply
    77,988.75x = 170,820.75 × 170,820.75
  4. Step 4: Simplify right side
    77,988.75x = 29,179,728,630.56
  5. Step 5: Solve for x
    x = 29,179,728,630.56/77,988.75
  6. Step 6: Final answer
    x = 374,153.05

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.