Home / 206,177.20-309,085.80-79,903.60

Finding the Fourth Proportional to 206,177.20, 309,085.80 and 79,903.60

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Solution

The fourth proportional to 206,177.20, 309,085.80 and 79,903.60 is: 119,785.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,177.20 : 309,085.80 = 79,903.60 : x
  2. Step 2: Convert to fraction form
    206,177.20/309,085.80 = 79,903.60/x
  3. Step 3: Cross multiply
    206,177.20x = 309,085.80 × 79,903.60
  4. Step 4: Simplify right side
    206,177.20x = 24,697,068,128.88
  5. Step 5: Solve for x
    x = 24,697,068,128.88/206,177.20
  6. Step 6: Final answer
    x = 119,785.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.