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Finding the Third Proportional to 69,711 and 149,541

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Solution

The third proportional to 69,711 and 149,541 is: 320,788.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,711 : 149,541 = 149,541 : x
  2. Step 2: Convert to fraction form
    69,711/149,541 = 149,541/x
  3. Step 3: Cross multiply
    69,711x = 149,541 × 149,541
  4. Step 4: Simplify right side
    69,711x = 22,362,510,681
  5. Step 5: Solve for x
    x = 22,362,510,681/69,711
  6. Step 6: Final answer
    x = 320,788.84

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.