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Finding the Third Proportional to 74,617 and 115,707

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Solution

The third proportional to 74,617 and 115,707 is: 179,424.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,617 : 115,707 = 115,707 : x
  2. Step 2: Convert to fraction form
    74,617/115,707 = 115,707/x
  3. Step 3: Cross multiply
    74,617x = 115,707 × 115,707
  4. Step 4: Simplify right side
    74,617x = 13,388,109,849
  5. Step 5: Solve for x
    x = 13,388,109,849/74,617
  6. Step 6: Final answer
    x = 179,424.39

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.