Home / 209,128.91-288,597.35-113,635.61

Finding the Fourth Proportional to 209,128.91, 288,597.35 and 113,635.61

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Solution

The fourth proportional to 209,128.91, 288,597.35 and 113,635.61 is: 156,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,128.91 : 288,597.35 = 113,635.61 : x
  2. Step 2: Convert to fraction form
    209,128.91/288,597.35 = 113,635.61/x
  3. Step 3: Cross multiply
    209,128.91x = 288,597.35 × 113,635.61
  4. Step 4: Simplify right side
    209,128.91x = 32,794,935,195.78
  5. Step 5: Solve for x
    x = 32,794,935,195.78/209,128.91
  6. Step 6: Final answer
    x = 156,816.85

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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.