Home / 143,790.56-198,432.41-79,262.09

Finding the Fourth Proportional to 143,790.56, 198,432.41 and 79,262.09

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Solution

The fourth proportional to 143,790.56, 198,432.41 and 79,262.09 is: 109,382.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,790.56 : 198,432.41 = 79,262.09 : x
  2. Step 2: Convert to fraction form
    143,790.56/198,432.41 = 79,262.09/x
  3. Step 3: Cross multiply
    143,790.56x = 198,432.41 × 79,262.09
  4. Step 4: Simplify right side
    143,790.56x = 15,728,166,151.86
  5. Step 5: Solve for x
    x = 15,728,166,151.86/143,790.56
  6. Step 6: Final answer
    x = 109,382.47

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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.