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Finding the Third Proportional to 75,709.75 and 163,959

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Solution

The third proportional to 75,709.75 and 163,959 is: 355,073.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,709.75 : 163,959 = 163,959 : x
  2. Step 2: Convert to fraction form
    75,709.75/163,959 = 163,959/x
  3. Step 3: Cross multiply
    75,709.75x = 163,959 × 163,959
  4. Step 4: Simplify right side
    75,709.75x = 26,882,553,681
  5. Step 5: Solve for x
    x = 26,882,553,681/75,709.75
  6. Step 6: Final answer
    x = 355,073.87

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.