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Finding the Third Proportional to 139,236 and 212,118

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Solution

The third proportional to 139,236 and 212,118 is: 323,149.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,236 : 212,118 = 212,118 : x
  2. Step 2: Convert to fraction form
    139,236/212,118 = 212,118/x
  3. Step 3: Cross multiply
    139,236x = 212,118 × 212,118
  4. Step 4: Simplify right side
    139,236x = 44,994,045,924
  5. Step 5: Solve for x
    x = 44,994,045,924/139,236
  6. Step 6: Final answer
    x = 323,149.52

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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.