Home / 132,004.69-197,976.39-78,711.55

Finding the Fourth Proportional to 132,004.69, 197,976.39 and 78,711.55

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Solution

The fourth proportional to 132,004.69, 197,976.39 and 78,711.55 is: 118,049.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,004.69 : 197,976.39 = 78,711.55 : x
  2. Step 2: Convert to fraction form
    132,004.69/197,976.39 = 78,711.55/x
  3. Step 3: Cross multiply
    132,004.69x = 197,976.39 × 78,711.55
  4. Step 4: Simplify right side
    132,004.69x = 15,583,028,520.30
  5. Step 5: Solve for x
    x = 15,583,028,520.30/132,004.69
  6. Step 6: Final answer
    x = 118,049.05

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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.