Home / 198,511.16-297,692.21-72,120.17

Finding the Fourth Proportional to 198,511.16, 297,692.21 and 72,120.17

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Solution

The fourth proportional to 198,511.16, 297,692.21 and 72,120.17 is: 108,153.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,511.16 : 297,692.21 = 72,120.17 : x
  2. Step 2: Convert to fraction form
    198,511.16/297,692.21 = 72,120.17/x
  3. Step 3: Cross multiply
    198,511.16x = 297,692.21 × 72,120.17
  4. Step 4: Simplify right side
    198,511.16x = 21,469,613,717.41
  5. Step 5: Solve for x
    x = 21,469,613,717.41/198,511.16
  6. Step 6: Final answer
    x = 108,153.19

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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.