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Finding the Fourth Proportional to 207,392.94, 311,134.77 and 67,165.74

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Solution

The fourth proportional to 207,392.94, 311,134.77 and 67,165.74 is: 100,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,392.94 : 311,134.77 = 67,165.74 : x
  2. Step 2: Convert to fraction form
    207,392.94/311,134.77 = 67,165.74/x
  3. Step 3: Cross multiply
    207,392.94x = 311,134.77 × 67,165.74
  4. Step 4: Simplify right side
    207,392.94x = 20,897,597,066.78
  5. Step 5: Solve for x
    x = 20,897,597,066.78/207,392.94
  6. Step 6: Final answer
    x = 100,763.30

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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.