Home / 131,452.20-197,178.30-78,834.60

Finding the Fourth Proportional to 131,452.20, 197,178.30 and 78,834.60

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Solution

The fourth proportional to 131,452.20, 197,178.30 and 78,834.60 is: 118,251.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,452.20 : 197,178.30 = 78,834.60 : x
  2. Step 2: Convert to fraction form
    131,452.20/197,178.30 = 78,834.60/x
  3. Step 3: Cross multiply
    131,452.20x = 197,178.30 × 78,834.60
  4. Step 4: Simplify right side
    131,452.20x = 15,544,472,409.18
  5. Step 5: Solve for x
    x = 15,544,472,409.18/131,452.20
  6. Step 6: Final answer
    x = 118,251.90

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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.