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Finding the Third Proportional to 79,890.75 and 172,237.50

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Solution

The third proportional to 79,890.75 and 172,237.50 is: 371,329.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,890.75 : 172,237.50 = 172,237.50 : x
  2. Step 2: Convert to fraction form
    79,890.75/172,237.50 = 172,237.50/x
  3. Step 3: Cross multiply
    79,890.75x = 172,237.50 × 172,237.50
  4. Step 4: Simplify right side
    79,890.75x = 29,665,756,406.25
  5. Step 5: Solve for x
    x = 29,665,756,406.25/79,890.75
  6. Step 6: Final answer
    x = 371,329.05

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.