Home / 139,212.06-192,112.78-75,549.86

Finding the Fourth Proportional to 139,212.06, 192,112.78 and 75,549.86

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Solution

The fourth proportional to 139,212.06, 192,112.78 and 75,549.86 is: 104,258.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,212.06 : 192,112.78 = 75,549.86 : x
  2. Step 2: Convert to fraction form
    139,212.06/192,112.78 = 75,549.86/x
  3. Step 3: Cross multiply
    139,212.06x = 192,112.78 × 75,549.86
  4. Step 4: Simplify right side
    139,212.06x = 14,514,093,633.21
  5. Step 5: Solve for x
    x = 14,514,093,633.21/139,212.06
  6. Step 6: Final answer
    x = 104,258.88

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1.5x scale

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.