Home / 139,205.27-192,103.40-75,543.07

Finding the Fourth Proportional to 139,205.27, 192,103.40 and 75,543.07

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Solution

The fourth proportional to 139,205.27, 192,103.40 and 75,543.07 is: 104,249.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,205.27 : 192,103.40 = 75,543.07 : x
  2. Step 2: Convert to fraction form
    139,205.27/192,103.40 = 75,543.07/x
  3. Step 3: Cross multiply
    139,205.27x = 192,103.40 × 75,543.07
  4. Step 4: Simplify right side
    139,205.27x = 14,512,080,593.44
  5. Step 5: Solve for x
    x = 14,512,080,593.44/139,205.27
  6. Step 6: Final answer
    x = 104,249.51

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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.