Home / 208,557.18-287,809.20-113,063.85

Finding the Fourth Proportional to 208,557.18, 287,809.20 and 113,063.85

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Solution

The fourth proportional to 208,557.18, 287,809.20 and 113,063.85 is: 156,028.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,557.18 : 287,809.20 = 113,063.85 : x
  2. Step 2: Convert to fraction form
    208,557.18/287,809.20 = 113,063.85/x
  3. Step 3: Cross multiply
    208,557.18x = 287,809.20 × 113,063.85
  4. Step 4: Simplify right side
    208,557.18x = 32,540,816,217.42
  5. Step 5: Solve for x
    x = 32,540,816,217.42/208,557.18
  6. Step 6: Final answer
    x = 156,028.27

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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.