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Finding the Fourth Proportional to 143,590.59, 198,161.60 and 79,932.47

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Solution

The fourth proportional to 143,590.59, 198,161.60 and 79,932.47 is: 110,310.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,590.59 : 198,161.60 = 79,932.47 : x
  2. Step 2: Convert to fraction form
    143,590.59/198,161.60 = 79,932.47/x
  3. Step 3: Cross multiply
    143,590.59x = 198,161.60 × 79,932.47
  4. Step 4: Simplify right side
    143,590.59x = 15,839,544,756.68
  5. Step 5: Solve for x
    x = 15,839,544,756.68/143,590.59
  6. Step 6: Final answer
    x = 110,310.47

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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.