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Finding the Third Proportional to 76,507.75 and 165,720.50

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Solution

The third proportional to 76,507.75 and 165,720.50 is: 358,960.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,507.75 : 165,720.50 = 165,720.50 : x
  2. Step 2: Convert to fraction form
    76,507.75/165,720.50 = 165,720.50/x
  3. Step 3: Cross multiply
    76,507.75x = 165,720.50 × 165,720.50
  4. Step 4: Simplify right side
    76,507.75x = 27,463,284,120.25
  5. Step 5: Solve for x
    x = 27,463,284,120.25/76,507.75
  6. Step 6: Final answer
    x = 358,960.81

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.