Home / 139,342.44-192,286.13-78,913.52

Finding the Fourth Proportional to 139,342.44, 192,286.13 and 78,913.52

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Solution

The fourth proportional to 139,342.44, 192,286.13 and 78,913.52 is: 108,897.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,342.44 : 192,286.13 = 78,913.52 : x
  2. Step 2: Convert to fraction form
    139,342.44/192,286.13 = 78,913.52/x
  3. Step 3: Cross multiply
    139,342.44x = 192,286.13 × 78,913.52
  4. Step 4: Simplify right side
    139,342.44x = 15,173,974,404.05
  5. Step 5: Solve for x
    x = 15,173,974,404.05/139,342.44
  6. Step 6: Final answer
    x = 108,897.01

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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.