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Finding the Third Proportional to 66,397 and 102,808.50

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Solution

The third proportional to 66,397 and 102,808.50 is: 159,187.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,397 : 102,808.50 = 102,808.50 : x
  2. Step 2: Convert to fraction form
    66,397/102,808.50 = 102,808.50/x
  3. Step 3: Cross multiply
    66,397x = 102,808.50 × 102,808.50
  4. Step 4: Simplify right side
    66,397x = 10,569,587,672.25
  5. Step 5: Solve for x
    x = 10,569,587,672.25/66,397
  6. Step 6: Final answer
    x = 159,187.73

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.