Home / 143,709.16-198,310.80-79,165.76

Finding the Fourth Proportional to 143,709.16, 198,310.80 and 79,165.76

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Solution

The fourth proportional to 143,709.16, 198,310.80 and 79,165.76 is: 109,244.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,709.16 : 198,310.80 = 79,165.76 : x
  2. Step 2: Convert to fraction form
    143,709.16/198,310.80 = 79,165.76/x
  3. Step 3: Cross multiply
    143,709.16x = 198,310.80 × 79,165.76
  4. Step 4: Simplify right side
    143,709.16x = 15,699,425,198.21
  5. Step 5: Solve for x
    x = 15,699,425,198.21/143,709.16
  6. Step 6: Final answer
    x = 109,244.43

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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.