Home / 139,976.28-193,170.92-86,296.76

Finding the Fourth Proportional to 139,976.28, 193,170.92 and 86,296.76

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Solution

The fourth proportional to 139,976.28, 193,170.92 and 86,296.76 is: 119,091.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,976.28 : 193,170.92 = 86,296.76 : x
  2. Step 2: Convert to fraction form
    139,976.28/193,170.92 = 86,296.76/x
  3. Step 3: Cross multiply
    139,976.28x = 193,170.92 × 86,296.76
  4. Step 4: Simplify right side
    139,976.28x = 16,670,024,522.22
  5. Step 5: Solve for x
    x = 16,670,024,522.22/139,976.28
  6. Step 6: Final answer
    x = 119,091.78

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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.