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Finding the Third Proportional to 79,719.75 and 122,137.88

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Solution

The third proportional to 79,719.75 and 122,137.88 is: 187,126.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,719.75 : 122,137.88 = 122,137.88 : x
  2. Step 2: Convert to fraction form
    79,719.75/122,137.88 = 122,137.88/x
  3. Step 3: Cross multiply
    79,719.75x = 122,137.88 × 122,137.88
  4. Step 4: Simplify right side
    79,719.75x = 14,917,660,509.52
  5. Step 5: Solve for x
    x = 14,917,660,509.52/79,719.75
  6. Step 6: Final answer
    x = 187,126.28

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.