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Finding the Third Proportional to 81,119 and 121,004

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Solution

The third proportional to 81,119 and 121,004 is: 180,499.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,119 : 121,004 = 121,004 : x
  2. Step 2: Convert to fraction form
    81,119/121,004 = 121,004/x
  3. Step 3: Cross multiply
    81,119x = 121,004 × 121,004
  4. Step 4: Simplify right side
    81,119x = 14,641,968,016
  5. Step 5: Solve for x
    x = 14,641,968,016/81,119
  6. Step 6: Final answer
    x = 180,499.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.