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Finding the Third Proportional to 117,981.75 and 255,645.75

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Solution

The third proportional to 117,981.75 and 255,645.75 is: 553,939.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,981.75 : 255,645.75 = 255,645.75 : x
  2. Step 2: Convert to fraction form
    117,981.75/255,645.75 = 255,645.75/x
  3. Step 3: Cross multiply
    117,981.75x = 255,645.75 × 255,645.75
  4. Step 4: Simplify right side
    117,981.75x = 65,354,749,493.06
  5. Step 5: Solve for x
    x = 65,354,749,493.06/117,981.75
  6. Step 6: Final answer
    x = 553,939.48

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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.