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Finding the Third Proportional to 66,557 and 145,395

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Solution

The third proportional to 66,557 and 145,395 is: 317,618.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,557 : 145,395 = 145,395 : x
  2. Step 2: Convert to fraction form
    66,557/145,395 = 145,395/x
  3. Step 3: Cross multiply
    66,557x = 145,395 × 145,395
  4. Step 4: Simplify right side
    66,557x = 21,139,706,025
  5. Step 5: Solve for x
    x = 21,139,706,025/66,557
  6. Step 6: Final answer
    x = 317,618.07

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.