Home / 139,665.10-192,758.60-82,286.08

Finding the Fourth Proportional to 139,665.10, 192,758.60 and 82,286.08

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Solution

The fourth proportional to 139,665.10, 192,758.60 and 82,286.08 is: 113,567.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,665.10 : 192,758.60 = 82,286.08 : x
  2. Step 2: Convert to fraction form
    139,665.10/192,758.60 = 82,286.08/x
  3. Step 3: Cross multiply
    139,665.10x = 192,758.60 × 82,286.08
  4. Step 4: Simplify right side
    139,665.10x = 15,861,348,995.53
  5. Step 5: Solve for x
    x = 15,861,348,995.53/139,665.10
  6. Step 6: Final answer
    x = 113,567.02

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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.