Home / 129,938.12-194,919.94-54,020.98

Finding the Fourth Proportional to 129,938.12, 194,919.94 and 54,020.98

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Solution

The fourth proportional to 129,938.12, 194,919.94 and 54,020.98 is: 81,036.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,938.12 : 194,919.94 = 54,020.98 : x
  2. Step 2: Convert to fraction form
    129,938.12/194,919.94 = 54,020.98/x
  3. Step 3: Cross multiply
    129,938.12x = 194,919.94 × 54,020.98
  4. Step 4: Simplify right side
    129,938.12x = 10,529,765,205.74
  5. Step 5: Solve for x
    x = 10,529,765,205.74/129,938.12
  6. Step 6: Final answer
    x = 81,036.77

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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.