Home / 139,664.72-192,758.08-82,285.70

Finding the Fourth Proportional to 139,664.72, 192,758.08 and 82,285.70

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Solution

The fourth proportional to 139,664.72, 192,758.08 and 82,285.70 is: 113,566.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,664.72 : 192,758.08 = 82,285.70 : x
  2. Step 2: Convert to fraction form
    139,664.72/192,758.08 = 82,285.70/x
  3. Step 3: Cross multiply
    139,664.72x = 192,758.08 × 82,285.70
  4. Step 4: Simplify right side
    139,664.72x = 15,861,234,290.17
  5. Step 5: Solve for x
    x = 15,861,234,290.17/139,664.72
  6. Step 6: Final answer
    x = 113,566.50

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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.