Home / 185,639.41-278,414.51-85,703.61

Finding the Fourth Proportional to 185,639.41, 278,414.51 and 85,703.61

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Solution

The fourth proportional to 185,639.41, 278,414.51 and 85,703.61 is: 128,534.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,639.41 : 278,414.51 = 85,703.61 : x
  2. Step 2: Convert to fraction form
    185,639.41/278,414.51 = 85,703.61/x
  3. Step 3: Cross multiply
    185,639.41x = 278,414.51 × 85,703.61
  4. Step 4: Simplify right side
    185,639.41x = 23,861,129,198.92
  5. Step 5: Solve for x
    x = 23,861,129,198.92/185,639.41
  6. Step 6: Final answer
    x = 128,534.82

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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.