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Finding the Third Proportional to 66,510 and 144,684

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Solution

The third proportional to 66,510 and 144,684 is: 314,741.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510 : 144,684 = 144,684 : x
  2. Step 2: Convert to fraction form
    66,510/144,684 = 144,684/x
  3. Step 3: Cross multiply
    66,510x = 144,684 × 144,684
  4. Step 4: Simplify right side
    66,510x = 20,933,459,856
  5. Step 5: Solve for x
    x = 20,933,459,856/66,510
  6. Step 6: Final answer
    x = 314,741.54

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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.