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Finding the Third Proportional to 121,651.50 and 193,719

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Solution

The third proportional to 121,651.50 and 193,719 is: 308,479.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,651.50 : 193,719 = 193,719 : x
  2. Step 2: Convert to fraction form
    121,651.50/193,719 = 193,719/x
  3. Step 3: Cross multiply
    121,651.50x = 193,719 × 193,719
  4. Step 4: Simplify right side
    121,651.50x = 37,527,050,961
  5. Step 5: Solve for x
    x = 37,527,050,961/121,651.50
  6. Step 6: Final answer
    x = 308,479.97

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.