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Finding the Third Proportional to 139,220 and 212,094

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Solution

The third proportional to 139,220 and 212,094 is: 323,113.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,220 : 212,094 = 212,094 : x
  2. Step 2: Convert to fraction form
    139,220/212,094 = 212,094/x
  3. Step 3: Cross multiply
    139,220x = 212,094 × 212,094
  4. Step 4: Simplify right side
    139,220x = 44,983,864,836
  5. Step 5: Solve for x
    x = 44,983,864,836/139,220
  6. Step 6: Final answer
    x = 323,113.52

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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.