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Finding the Third Proportional to 128,133 and 192,138.75

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Solution

The third proportional to 128,133 and 192,138.75 is: 288,117.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,133 : 192,138.75 = 192,138.75 : x
  2. Step 2: Convert to fraction form
    128,133/192,138.75 = 192,138.75/x
  3. Step 3: Cross multiply
    128,133x = 192,138.75 × 192,138.75
  4. Step 4: Simplify right side
    128,133x = 36,917,299,251.56
  5. Step 5: Solve for x
    x = 36,917,299,251.56/128,133
  6. Step 6: Final answer
    x = 288,117.03

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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.