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Finding the Third Proportional to 69,772 and 148,880

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Solution

The third proportional to 69,772 and 148,880 is: 317,681.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,772 : 148,880 = 148,880 : x
  2. Step 2: Convert to fraction form
    69,772/148,880 = 148,880/x
  3. Step 3: Cross multiply
    69,772x = 148,880 × 148,880
  4. Step 4: Simplify right side
    69,772x = 22,165,254,400
  5. Step 5: Solve for x
    x = 22,165,254,400/69,772
  6. Step 6: Final answer
    x = 317,681.22

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.