Home / 140,137.27-193,395.74-78,904.55

Finding the Fourth Proportional to 140,137.27, 193,395.74 and 78,904.55

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Solution

The fourth proportional to 140,137.27, 193,395.74 and 78,904.55 is: 108,891.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,137.27 : 193,395.74 = 78,904.55 : x
  2. Step 2: Convert to fraction form
    140,137.27/193,395.74 = 78,904.55/x
  3. Step 3: Cross multiply
    140,137.27x = 193,395.74 × 78,904.55
  4. Step 4: Simplify right side
    140,137.27x = 15,259,803,836.62
  5. Step 5: Solve for x
    x = 15,259,803,836.62/140,137.27
  6. Step 6: Final answer
    x = 108,891.83

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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.