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Finding the Third Proportional to 67,842 and 121,104

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Solution

The third proportional to 67,842 and 121,104 is: 216,181.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,842 : 121,104 = 121,104 : x
  2. Step 2: Convert to fraction form
    67,842/121,104 = 121,104/x
  3. Step 3: Cross multiply
    67,842x = 121,104 × 121,104
  4. Step 4: Simplify right side
    67,842x = 14,666,178,816
  5. Step 5: Solve for x
    x = 14,666,178,816/67,842
  6. Step 6: Final answer
    x = 216,181.40

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.