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Finding the Third Proportional to 70,640 and 149,704

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Solution

The third proportional to 70,640 and 149,704 is: 317,260.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,640 : 149,704 = 149,704 : x
  2. Step 2: Convert to fraction form
    70,640/149,704 = 149,704/x
  3. Step 3: Cross multiply
    70,640x = 149,704 × 149,704
  4. Step 4: Simplify right side
    70,640x = 22,411,287,616
  5. Step 5: Solve for x
    x = 22,411,287,616/70,640
  6. Step 6: Final answer
    x = 317,260.58

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.