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Finding the Third Proportional to 77,718 and 120,013

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Solution

The third proportional to 77,718 and 120,013 is: 185,325.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,718 : 120,013 = 120,013 : x
  2. Step 2: Convert to fraction form
    77,718/120,013 = 120,013/x
  3. Step 3: Cross multiply
    77,718x = 120,013 × 120,013
  4. Step 4: Simplify right side
    77,718x = 14,403,120,169
  5. Step 5: Solve for x
    x = 14,403,120,169/77,718
  6. Step 6: Final answer
    x = 185,325.41

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.