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Finding the Third Proportional to 72,693.56 and 106,221.09

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Solution

The third proportional to 72,693.56 and 106,221.09 is: 155,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,693.56 : 106,221.09 = 106,221.09 : x
  2. Step 2: Convert to fraction form
    72,693.56/106,221.09 = 106,221.09/x
  3. Step 3: Cross multiply
    72,693.56x = 106,221.09 × 106,221.09
  4. Step 4: Simplify right side
    72,693.56x = 11,282,920,757.45
  5. Step 5: Solve for x
    x = 11,282,920,757.45/72,693.56
  6. Step 6: Final answer
    x = 155,212.10

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.