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Finding the Third Proportional to 68,213 and 145,899

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Solution

The third proportional to 68,213 and 145,899 is: 312,059.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,213 : 145,899 = 145,899 : x
  2. Step 2: Convert to fraction form
    68,213/145,899 = 145,899/x
  3. Step 3: Cross multiply
    68,213x = 145,899 × 145,899
  4. Step 4: Simplify right side
    68,213x = 21,286,518,201
  5. Step 5: Solve for x
    x = 21,286,518,201/68,213
  6. Step 6: Final answer
    x = 312,059.55

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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.