Home / 100,806.20-139,103.52-58,367.60

Finding the Fourth Proportional to 100,806.20, 139,103.52 and 58,367.60

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Solution

The fourth proportional to 100,806.20, 139,103.52 and 58,367.60 is: 80,542.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,806.20 : 139,103.52 = 58,367.60 : x
  2. Step 2: Convert to fraction form
    100,806.20/139,103.52 = 58,367.60/x
  3. Step 3: Cross multiply
    100,806.20x = 139,103.52 × 58,367.60
  4. Step 4: Simplify right side
    100,806.20x = 8,119,138,613.95
  5. Step 5: Solve for x
    x = 8,119,138,613.95/100,806.20
  6. Step 6: Final answer
    x = 80,542.06

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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.