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Finding the Third Proportional to 80,946 and 121,135.50

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Solution

The third proportional to 80,946 and 121,135.50 is: 181,278.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,946 : 121,135.50 = 121,135.50 : x
  2. Step 2: Convert to fraction form
    80,946/121,135.50 = 121,135.50/x
  3. Step 3: Cross multiply
    80,946x = 121,135.50 × 121,135.50
  4. Step 4: Simplify right side
    80,946x = 14,673,809,360.25
  5. Step 5: Solve for x
    x = 14,673,809,360.25/80,946
  6. Step 6: Final answer
    x = 181,278.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.