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Finding the Third Proportional to 77,790.75 and 120,141.75

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Solution

The third proportional to 77,790.75 and 120,141.75 is: 185,549.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,790.75 : 120,141.75 = 120,141.75 : x
  2. Step 2: Convert to fraction form
    77,790.75/120,141.75 = 120,141.75/x
  3. Step 3: Cross multiply
    77,790.75x = 120,141.75 × 120,141.75
  4. Step 4: Simplify right side
    77,790.75x = 14,434,040,093.06
  5. Step 5: Solve for x
    x = 14,434,040,093.06/77,790.75
  6. Step 6: Final answer
    x = 185,549.57

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.