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Finding the Third Proportional to 12,165,903 and 18,831,231

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Solution

The third proportional to 12,165,903 and 18,831,231 is: 29,148,289.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165,903 : 18,831,231 = 18,831,231 : x
  2. Step 2: Convert to fraction form
    12,165,903/18,831,231 = 18,831,231/x
  3. Step 3: Cross multiply
    12,165,903x = 18,831,231 × 18,831,231
  4. Step 4: Simplify right side
    12,165,903x = 354,615,260,975,361
  5. Step 5: Solve for x
    x = 354,615,260,975,361/12,165,903
  6. Step 6: Final answer
    x = 29,148,289.36

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.