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Finding the Third Proportional to 135,126 and 211,959

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Solution

The third proportional to 135,126 and 211,959 is: 332,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,126 : 211,959 = 211,959 : x
  2. Step 2: Convert to fraction form
    135,126/211,959 = 211,959/x
  3. Step 3: Cross multiply
    135,126x = 211,959 × 211,959
  4. Step 4: Simplify right side
    135,126x = 44,926,617,681
  5. Step 5: Solve for x
    x = 44,926,617,681/135,126
  6. Step 6: Final answer
    x = 332,479.45

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.