Home / 129,921.80-194,736.90-55,029.20

Finding the Fourth Proportional to 129,921.80, 194,736.90 and 55,029.20

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Solution

The fourth proportional to 129,921.80, 194,736.90 and 55,029.20 is: 82,482.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,921.80 : 194,736.90 = 55,029.20 : x
  2. Step 2: Convert to fraction form
    129,921.80/194,736.90 = 55,029.20/x
  3. Step 3: Cross multiply
    129,921.80x = 194,736.90 × 55,029.20
  4. Step 4: Simplify right side
    129,921.80x = 10,716,215,817.48
  5. Step 5: Solve for x
    x = 10,716,215,817.48/129,921.80
  6. Step 6: Final answer
    x = 82,482.05

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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.