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Finding the Fourth Proportional to 133,279.58, 199,820.61 and 80,676.62

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Solution

The fourth proportional to 133,279.58, 199,820.61 and 80,676.62 is: 120,955.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,279.58 : 199,820.61 = 80,676.62 : x
  2. Step 2: Convert to fraction form
    133,279.58/199,820.61 = 80,676.62/x
  3. Step 3: Cross multiply
    133,279.58x = 199,820.61 × 80,676.62
  4. Step 4: Simplify right side
    133,279.58x = 16,120,851,421.14
  5. Step 5: Solve for x
    x = 16,120,851,421.14/133,279.58
  6. Step 6: Final answer
    x = 120,955.15

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1.5x scale

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.