Home / 143,990.58-198,704.22-79,465.88

Finding the Fourth Proportional to 143,990.58, 198,704.22 and 79,465.88

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Solution

The fourth proportional to 143,990.58, 198,704.22 and 79,465.88 is: 109,661.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,990.58 : 198,704.22 = 79,465.88 : x
  2. Step 2: Convert to fraction form
    143,990.58/198,704.22 = 79,465.88/x
  3. Step 3: Cross multiply
    143,990.58x = 198,704.22 × 79,465.88
  4. Step 4: Simplify right side
    143,990.58x = 15,790,205,702.01
  5. Step 5: Solve for x
    x = 15,790,205,702.01/143,990.58
  6. Step 6: Final answer
    x = 109,661.38

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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.