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Finding the Fourth Proportional to 126,960.80, 190,364.64 and 67,037

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Solution

The fourth proportional to 126,960.80, 190,364.64 and 67,037 is: 100,515.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,960.80 : 190,364.64 = 67,037 : x
  2. Step 2: Convert to fraction form
    126,960.80/190,364.64 = 67,037/x
  3. Step 3: Cross multiply
    126,960.80x = 190,364.64 × 67,037
  4. Step 4: Simplify right side
    126,960.80x = 12,761,474,371.68
  5. Step 5: Solve for x
    x = 12,761,474,371.68/126,960.80
  6. Step 6: Final answer
    x = 100,515.08

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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.