Home / 91,163.07-125,743.59-79,205.85

Finding the Fourth Proportional to 91,163.07, 125,743.59 and 79,205.85

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Solution

The fourth proportional to 91,163.07, 125,743.59 and 79,205.85 is: 109,250.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,163.07 : 125,743.59 = 79,205.85 : x
  2. Step 2: Convert to fraction form
    91,163.07/125,743.59 = 79,205.85/x
  3. Step 3: Cross multiply
    91,163.07x = 125,743.59 × 79,205.85
  4. Step 4: Simplify right side
    91,163.07x = 9,959,627,928.00
  5. Step 5: Solve for x
    x = 9,959,627,928.00/91,163.07
  6. Step 6: Final answer
    x = 109,250.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.