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Finding the Third Proportional to 133,078 and 195,721

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Solution

The third proportional to 133,078 and 195,721 is: 287,851.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,078 : 195,721 = 195,721 : x
  2. Step 2: Convert to fraction form
    133,078/195,721 = 195,721/x
  3. Step 3: Cross multiply
    133,078x = 195,721 × 195,721
  4. Step 4: Simplify right side
    133,078x = 38,306,709,841
  5. Step 5: Solve for x
    x = 38,306,709,841/133,078
  6. Step 6: Final answer
    x = 287,851.56

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.