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Finding the Third Proportional to 67,989 and 147,276

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Solution

The third proportional to 67,989 and 147,276 is: 319,025.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,989 : 147,276 = 147,276 : x
  2. Step 2: Convert to fraction form
    67,989/147,276 = 147,276/x
  3. Step 3: Cross multiply
    67,989x = 147,276 × 147,276
  4. Step 4: Simplify right side
    67,989x = 21,690,220,176
  5. Step 5: Solve for x
    x = 21,690,220,176/67,989
  6. Step 6: Final answer
    x = 319,025.43

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.