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Finding the Third Proportional to 66,976 and 144,312

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Solution

The third proportional to 66,976 and 144,312 is: 310,946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,976 : 144,312 = 144,312 : x
  2. Step 2: Convert to fraction form
    66,976/144,312 = 144,312/x
  3. Step 3: Cross multiply
    66,976x = 144,312 × 144,312
  4. Step 4: Simplify right side
    66,976x = 20,825,953,344
  5. Step 5: Solve for x
    x = 20,825,953,344/66,976
  6. Step 6: Final answer
    x = 310,946.51

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.