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Finding the Fourth Proportional to 129,847.80, 194,625.90 and 54,955.20

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Solution

The fourth proportional to 129,847.80, 194,625.90 and 54,955.20 is: 82,371.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,847.80 : 194,625.90 = 54,955.20 : x
  2. Step 2: Convert to fraction form
    129,847.80/194,625.90 = 54,955.20/x
  3. Step 3: Cross multiply
    129,847.80x = 194,625.90 × 54,955.20
  4. Step 4: Simplify right side
    129,847.80x = 10,695,705,259.68
  5. Step 5: Solve for x
    x = 10,695,705,259.68/129,847.80
  6. Step 6: Final answer
    x = 82,371.09

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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.