Home / 139,350.35-192,270.54-81,992.18

Finding the Fourth Proportional to 139,350.35, 192,270.54 and 81,992.18

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Solution

The fourth proportional to 139,350.35, 192,270.54 and 81,992.18 is: 113,129.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,350.35 : 192,270.54 = 81,992.18 : x
  2. Step 2: Convert to fraction form
    139,350.35/192,270.54 = 81,992.18/x
  3. Step 3: Cross multiply
    139,350.35x = 192,270.54 × 81,992.18
  4. Step 4: Simplify right side
    139,350.35x = 15,764,681,512.52
  5. Step 5: Solve for x
    x = 15,764,681,512.52/139,350.35
  6. Step 6: Final answer
    x = 113,129.83

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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.