Home / 143,940.30-215,910.45-130,162.20

Finding the Fourth Proportional to 143,940.30, 215,910.45 and 130,162.20

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Solution

The fourth proportional to 143,940.30, 215,910.45 and 130,162.20 is: 195,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,940.30 : 215,910.45 = 130,162.20 : x
  2. Step 2: Convert to fraction form
    143,940.30/215,910.45 = 130,162.20/x
  3. Step 3: Cross multiply
    143,940.30x = 215,910.45 × 130,162.20
  4. Step 4: Simplify right side
    143,940.30x = 28,103,379,174.99
  5. Step 5: Solve for x
    x = 28,103,379,174.99/143,940.30
  6. Step 6: Final answer
    x = 195,243.30

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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.