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Finding the Third Proportional to 66,270.25 and 142,428.50

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Solution

The third proportional to 66,270.25 and 142,428.50 is: 306,108.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,270.25 : 142,428.50 = 142,428.50 : x
  2. Step 2: Convert to fraction form
    66,270.25/142,428.50 = 142,428.50/x
  3. Step 3: Cross multiply
    66,270.25x = 142,428.50 × 142,428.50
  4. Step 4: Simplify right side
    66,270.25x = 20,285,877,612.25
  5. Step 5: Solve for x
    x = 20,285,877,612.25/66,270.25
  6. Step 6: Final answer
    x = 306,108.36

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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.