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Finding the Fourth Proportional to 126,969.30, 190,672.65 and 67,920.30

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Solution

The fourth proportional to 126,969.30, 190,672.65 and 67,920.30 is: 101,997.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,969.30 : 190,672.65 = 67,920.30 : x
  2. Step 2: Convert to fraction form
    126,969.30/190,672.65 = 67,920.30/x
  3. Step 3: Cross multiply
    126,969.30x = 190,672.65 × 67,920.30
  4. Step 4: Simplify right side
    126,969.30x = 12,950,543,589.80
  5. Step 5: Solve for x
    x = 12,950,543,589.80/126,969.30
  6. Step 6: Final answer
    x = 101,997.44

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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.