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Finding the Third Proportional to 78,043.50 and 165,805.50

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Solution

The third proportional to 78,043.50 and 165,805.50 is: 352,258.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,043.50 : 165,805.50 = 165,805.50 : x
  2. Step 2: Convert to fraction form
    78,043.50/165,805.50 = 165,805.50/x
  3. Step 3: Cross multiply
    78,043.50x = 165,805.50 × 165,805.50
  4. Step 4: Simplify right side
    78,043.50x = 27,491,463,830.25
  5. Step 5: Solve for x
    x = 27,491,463,830.25/78,043.50
  6. Step 6: Final answer
    x = 352,258.21

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.