Home / 131,156.20-197,171.70-111,910.60

Finding the Fourth Proportional to 131,156.20, 197,171.70 and 111,910.60

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Solution

The fourth proportional to 131,156.20, 197,171.70 and 111,910.60 is: 168,239.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,156.20 : 197,171.70 = 111,910.60 : x
  2. Step 2: Convert to fraction form
    131,156.20/197,171.70 = 111,910.60/x
  3. Step 3: Cross multiply
    131,156.20x = 197,171.70 × 111,910.60
  4. Step 4: Simplify right side
    131,156.20x = 22,065,603,250.02
  5. Step 5: Solve for x
    x = 22,065,603,250.02/131,156.20
  6. Step 6: Final answer
    x = 168,239.12

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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.