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Finding the Fourth Proportional to 143,863.91, 198,527.64 and 79,335.86

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Solution

The fourth proportional to 143,863.91, 198,527.64 and 79,335.86 is: 109,480.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,863.91 : 198,527.64 = 79,335.86 : x
  2. Step 2: Convert to fraction form
    143,863.91/198,527.64 = 79,335.86/x
  3. Step 3: Cross multiply
    143,863.91x = 198,527.64 × 79,335.86
  4. Step 4: Simplify right side
    143,863.91x = 15,750,361,884.36
  5. Step 5: Solve for x
    x = 15,750,361,884.36/143,863.91
  6. Step 6: Final answer
    x = 109,480.98

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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.