Home / 129,938.62-194,920.69-54,021.48

Finding the Fourth Proportional to 129,938.62, 194,920.69 and 54,021.48

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Solution

The fourth proportional to 129,938.62, 194,920.69 and 54,021.48 is: 81,037.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,938.62 : 194,920.69 = 54,021.48 : x
  2. Step 2: Convert to fraction form
    129,938.62/194,920.69 = 54,021.48/x
  3. Step 3: Cross multiply
    129,938.62x = 194,920.69 × 54,021.48
  4. Step 4: Simplify right side
    129,938.62x = 10,529,903,181.82
  5. Step 5: Solve for x
    x = 10,529,903,181.82/129,938.62
  6. Step 6: Final answer
    x = 81,037.52

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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.