Home / 80,002.08-110,613.18-78,739.04

Finding the Fourth Proportional to 80,002.08, 110,613.18 and 78,739.04

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Solution

The fourth proportional to 80,002.08, 110,613.18 and 78,739.04 is: 108,866.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,002.08 : 110,613.18 = 78,739.04 : x
  2. Step 2: Convert to fraction form
    80,002.08/110,613.18 = 78,739.04/x
  3. Step 3: Cross multiply
    80,002.08x = 110,613.18 × 78,739.04
  4. Step 4: Simplify right side
    80,002.08x = 8,709,575,604.55
  5. Step 5: Solve for x
    x = 8,709,575,604.55/80,002.08
  6. Step 6: Final answer
    x = 108,866.86

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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.