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Finding the Third Proportional to 68,880 and 145,968

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Solution

The third proportional to 68,880 and 145,968 is: 309,330.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,880 : 145,968 = 145,968 : x
  2. Step 2: Convert to fraction form
    68,880/145,968 = 145,968/x
  3. Step 3: Cross multiply
    68,880x = 145,968 × 145,968
  4. Step 4: Simplify right side
    68,880x = 21,306,657,024
  5. Step 5: Solve for x
    x = 21,306,657,024/68,880
  6. Step 6: Final answer
    x = 309,330.10

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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.