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Finding the Third Proportional to 71,509.50 and 157,021.50

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Solution

The third proportional to 71,509.50 and 157,021.50 is: 344,789.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,509.50 : 157,021.50 = 157,021.50 : x
  2. Step 2: Convert to fraction form
    71,509.50/157,021.50 = 157,021.50/x
  3. Step 3: Cross multiply
    71,509.50x = 157,021.50 × 157,021.50
  4. Step 4: Simplify right side
    71,509.50x = 24,655,751,462.25
  5. Step 5: Solve for x
    x = 24,655,751,462.25/71,509.50
  6. Step 6: Final answer
    x = 344,789.87

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.