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Finding the Fourth Proportional to 129,348.60, 194,022.90 and 120,600.60

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Solution

The fourth proportional to 129,348.60, 194,022.90 and 120,600.60 is: 180,900.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,348.60 : 194,022.90 = 120,600.60 : x
  2. Step 2: Convert to fraction form
    129,348.60/194,022.90 = 120,600.60/x
  3. Step 3: Cross multiply
    129,348.60x = 194,022.90 × 120,600.60
  4. Step 4: Simplify right side
    129,348.60x = 23,399,278,153.74
  5. Step 5: Solve for x
    x = 23,399,278,153.74/129,348.60
  6. Step 6: Final answer
    x = 180,900.90

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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.