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Finding the Third Proportional to 66,770 and 102,639

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Solution

The third proportional to 66,770 and 102,639 is: 157,776.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,770 : 102,639 = 102,639 : x
  2. Step 2: Convert to fraction form
    66,770/102,639 = 102,639/x
  3. Step 3: Cross multiply
    66,770x = 102,639 × 102,639
  4. Step 4: Simplify right side
    66,770x = 10,534,764,321
  5. Step 5: Solve for x
    x = 10,534,764,321/66,770
  6. Step 6: Final answer
    x = 157,776.91

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.