Home / 100,950.75-139,182.65-82,734.42

Finding the Fourth Proportional to 100,950.75, 139,182.65 and 82,734.42

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Solution

The fourth proportional to 100,950.75, 139,182.65 and 82,734.42 is: 114,067.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,950.75 : 139,182.65 = 82,734.42 : x
  2. Step 2: Convert to fraction form
    100,950.75/139,182.65 = 82,734.42/x
  3. Step 3: Cross multiply
    100,950.75x = 139,182.65 × 82,734.42
  4. Step 4: Simplify right side
    100,950.75x = 11,515,195,408.14
  5. Step 5: Solve for x
    x = 11,515,195,408.14/100,950.75
  6. Step 6: Final answer
    x = 114,067.46

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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.