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Finding the Third Proportional to 121,503.75 and 261,633.75

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Solution

The third proportional to 121,503.75 and 261,633.75 is: 563,375.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,503.75 : 261,633.75 = 261,633.75 : x
  2. Step 2: Convert to fraction form
    121,503.75/261,633.75 = 261,633.75/x
  3. Step 3: Cross multiply
    121,503.75x = 261,633.75 × 261,633.75
  4. Step 4: Simplify right side
    121,503.75x = 68,452,219,139.06
  5. Step 5: Solve for x
    x = 68,452,219,139.06/121,503.75
  6. Step 6: Final answer
    x = 563,375.36

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.