Home / 143,717.43-198,330.24-78,305.91

Finding the Fourth Proportional to 143,717.43, 198,330.24 and 78,305.91

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Solution

The fourth proportional to 143,717.43, 198,330.24 and 78,305.91 is: 108,062.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,717.43 : 198,330.24 = 78,305.91 : x
  2. Step 2: Convert to fraction form
    143,717.43/198,330.24 = 78,305.91/x
  3. Step 3: Cross multiply
    143,717.43x = 198,330.24 × 78,305.91
  4. Step 4: Simplify right side
    143,717.43x = 15,530,429,923.72
  5. Step 5: Solve for x
    x = 15,530,429,923.72/143,717.43
  6. Step 6: Final answer
    x = 108,062.26

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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.