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Finding the Third Proportional to 66,154 and 142,292

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Solution

The third proportional to 66,154 and 142,292 is: 306,058.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,154 : 142,292 = 142,292 : x
  2. Step 2: Convert to fraction form
    66,154/142,292 = 142,292/x
  3. Step 3: Cross multiply
    66,154x = 142,292 × 142,292
  4. Step 4: Simplify right side
    66,154x = 20,247,013,264
  5. Step 5: Solve for x
    x = 20,247,013,264/66,154
  6. Step 6: Final answer
    x = 306,058.79

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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.