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Finding the Third Proportional to 69,420 and 148,884

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Solution

The third proportional to 69,420 and 148,884 is: 319,309.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,420 : 148,884 = 148,884 : x
  2. Step 2: Convert to fraction form
    69,420/148,884 = 148,884/x
  3. Step 3: Cross multiply
    69,420x = 148,884 × 148,884
  4. Step 4: Simplify right side
    69,420x = 22,166,445,456
  5. Step 5: Solve for x
    x = 22,166,445,456/69,420
  6. Step 6: Final answer
    x = 319,309.21

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.