Home / 76,956.20-115,434.30-67,114.70

Finding the Fourth Proportional to 76,956.20, 115,434.30 and 67,114.70

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Solution

The fourth proportional to 76,956.20, 115,434.30 and 67,114.70 is: 100,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,956.20 : 115,434.30 = 67,114.70 : x
  2. Step 2: Convert to fraction form
    76,956.20/115,434.30 = 67,114.70/x
  3. Step 3: Cross multiply
    76,956.20x = 115,434.30 × 67,114.70
  4. Step 4: Simplify right side
    76,956.20x = 7,747,338,414.21
  5. Step 5: Solve for x
    x = 7,747,338,414.21/76,956.20
  6. Step 6: Final answer
    x = 100,672.05

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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.