Home / 139,458.28-192,468.72-82,869.64

Finding the Fourth Proportional to 139,458.28, 192,468.72 and 82,869.64

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Solution

The fourth proportional to 139,458.28, 192,468.72 and 82,869.64 is: 114,369.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,458.28 : 192,468.72 = 82,869.64 : x
  2. Step 2: Convert to fraction form
    139,458.28/192,468.72 = 82,869.64/x
  3. Step 3: Cross multiply
    139,458.28x = 192,468.72 × 82,869.64
  4. Step 4: Simplify right side
    139,458.28x = 15,949,813,537.66
  5. Step 5: Solve for x
    x = 15,949,813,537.66/139,458.28
  6. Step 6: Final answer
    x = 114,369.79

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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.