Home / 131,158.20-197,174.70-111,912.60

Finding the Fourth Proportional to 131,158.20, 197,174.70 and 111,912.60

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Solution

The fourth proportional to 131,158.20, 197,174.70 and 111,912.60 is: 168,242.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,158.20 : 197,174.70 = 111,912.60 : x
  2. Step 2: Convert to fraction form
    131,158.20/197,174.70 = 111,912.60/x
  3. Step 3: Cross multiply
    131,158.20x = 197,174.70 × 111,912.60
  4. Step 4: Simplify right side
    131,158.20x = 22,066,333,331.22
  5. Step 5: Solve for x
    x = 22,066,333,331.22/131,158.20
  6. Step 6: Final answer
    x = 168,242.12

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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.