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Finding the Fourth Proportional to 115,563.75, 173,049.65 and 79,975.79

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Solution

The fourth proportional to 115,563.75, 173,049.65 and 79,975.79 is: 119,758.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,563.75 : 173,049.65 = 79,975.79 : x
  2. Step 2: Convert to fraction form
    115,563.75/173,049.65 = 79,975.79/x
  3. Step 3: Cross multiply
    115,563.75x = 173,049.65 × 79,975.79
  4. Step 4: Simplify right side
    115,563.75x = 13,839,782,151.69
  5. Step 5: Solve for x
    x = 13,839,782,151.69/115,563.75
  6. Step 6: Final answer
    x = 119,758.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.