Home / 198,511.20-297,680.58-72,109.44

Finding the Fourth Proportional to 198,511.20, 297,680.58 and 72,109.44

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Solution

The fourth proportional to 198,511.20, 297,680.58 and 72,109.44 is: 108,132.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,511.20 : 297,680.58 = 72,109.44 : x
  2. Step 2: Convert to fraction form
    198,511.20/297,680.58 = 72,109.44/x
  3. Step 3: Cross multiply
    198,511.20x = 297,680.58 × 72,109.44
  4. Step 4: Simplify right side
    198,511.20x = 21,465,579,922.68
  5. Step 5: Solve for x
    x = 21,465,579,922.68/198,511.20
  6. Step 6: Final answer
    x = 108,132.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.