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Finding the Third Proportional to 75,270 and 112,911

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Solution

The third proportional to 75,270 and 112,911 is: 169,375.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,270 : 112,911 = 112,911 : x
  2. Step 2: Convert to fraction form
    75,270/112,911 = 112,911/x
  3. Step 3: Cross multiply
    75,270x = 112,911 × 112,911
  4. Step 4: Simplify right side
    75,270x = 12,748,893,921
  5. Step 5: Solve for x
    x = 12,748,893,921/75,270
  6. Step 6: Final answer
    x = 169,375.50

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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.