Home / 129,731.78-194,455.51-50,759.21

Finding the Fourth Proportional to 129,731.78, 194,455.51 and 50,759.21

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Solution

The fourth proportional to 129,731.78, 194,455.51 and 50,759.21 is: 76,083.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,731.78 : 194,455.51 = 50,759.21 : x
  2. Step 2: Convert to fraction form
    129,731.78/194,455.51 = 50,759.21/x
  3. Step 3: Cross multiply
    129,731.78x = 194,455.51 × 50,759.21
  4. Step 4: Simplify right side
    129,731.78x = 9,870,408,426.99
  5. Step 5: Solve for x
    x = 9,870,408,426.99/129,731.78
  6. Step 6: Final answer
    x = 76,083.19

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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.