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Finding the Third Proportional to 70,911 and 107,840

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Solution

The third proportional to 70,911 and 107,840 is: 164,000.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,911 : 107,840 = 107,840 : x
  2. Step 2: Convert to fraction form
    70,911/107,840 = 107,840/x
  3. Step 3: Cross multiply
    70,911x = 107,840 × 107,840
  4. Step 4: Simplify right side
    70,911x = 11,629,465,600
  5. Step 5: Solve for x
    x = 11,629,465,600/70,911
  6. Step 6: Final answer
    x = 164,000.87

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.