Home / 129,936.40-194,674.20-80,630.80

Finding the Fourth Proportional to 129,936.40, 194,674.20 and 80,630.80

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Solution

The fourth proportional to 129,936.40, 194,674.20 and 80,630.80 is: 120,803.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,936.40 : 194,674.20 = 80,630.80 : x
  2. Step 2: Convert to fraction form
    129,936.40/194,674.20 = 80,630.80/x
  3. Step 3: Cross multiply
    129,936.40x = 194,674.20 × 80,630.80
  4. Step 4: Simplify right side
    129,936.40x = 15,696,736,485.36
  5. Step 5: Solve for x
    x = 15,696,736,485.36/129,936.40
  6. Step 6: Final answer
    x = 120,803.23

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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.