Home / 143,861.52-198,548.12-82,631.76

Finding the Fourth Proportional to 143,861.52, 198,548.12 and 82,631.76

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Solution

The fourth proportional to 143,861.52, 198,548.12 and 82,631.76 is: 114,042.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,861.52 : 198,548.12 = 82,631.76 : x
  2. Step 2: Convert to fraction form
    143,861.52/198,548.12 = 82,631.76/x
  3. Step 3: Cross multiply
    143,861.52x = 198,548.12 × 82,631.76
  4. Step 4: Simplify right side
    143,861.52x = 16,406,380,600.29
  5. Step 5: Solve for x
    x = 16,406,380,600.29/143,861.52
  6. Step 6: Final answer
    x = 114,042.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.