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Finding the Third Proportional to 75,321 and 112,725

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Solution

The third proportional to 75,321 and 112,725 is: 168,703.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,321 : 112,725 = 112,725 : x
  2. Step 2: Convert to fraction form
    75,321/112,725 = 112,725/x
  3. Step 3: Cross multiply
    75,321x = 112,725 × 112,725
  4. Step 4: Simplify right side
    75,321x = 12,706,925,625
  5. Step 5: Solve for x
    x = 12,706,925,625/75,321
  6. Step 6: Final answer
    x = 168,703.62

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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.