Home / 139,844.39-192,999.19-85,393.55

Finding the Fourth Proportional to 139,844.39, 192,999.19 and 85,393.55

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Solution

The fourth proportional to 139,844.39, 192,999.19 and 85,393.55 is: 117,851.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,844.39 : 192,999.19 = 85,393.55 : x
  2. Step 2: Convert to fraction form
    139,844.39/192,999.19 = 85,393.55/x
  3. Step 3: Cross multiply
    139,844.39x = 192,999.19 × 85,393.55
  4. Step 4: Simplify right side
    139,844.39x = 16,480,886,410.35
  5. Step 5: Solve for x
    x = 16,480,886,410.35/139,844.39
  6. Step 6: Final answer
    x = 117,851.61

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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.