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Finding the Third Proportional to 69,070 and 103,605

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Solution

The third proportional to 69,070 and 103,605 is: 155,407.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,070 : 103,605 = 103,605 : x
  2. Step 2: Convert to fraction form
    69,070/103,605 = 103,605/x
  3. Step 3: Cross multiply
    69,070x = 103,605 × 103,605
  4. Step 4: Simplify right side
    69,070x = 10,733,996,025
  5. Step 5: Solve for x
    x = 10,733,996,025/69,070
  6. Step 6: Final answer
    x = 155,407.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.