Home / 129,455.38-194,183.07-74,012.50

Finding the Fourth Proportional to 129,455.38, 194,183.07 and 74,012.50

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Solution

The fourth proportional to 129,455.38, 194,183.07 and 74,012.50 is: 111,018.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,455.38 : 194,183.07 = 74,012.50 : x
  2. Step 2: Convert to fraction form
    129,455.38/194,183.07 = 74,012.50/x
  3. Step 3: Cross multiply
    129,455.38x = 194,183.07 × 74,012.50
  4. Step 4: Simplify right side
    129,455.38x = 14,371,974,468.38
  5. Step 5: Solve for x
    x = 14,371,974,468.38/129,455.38
  6. Step 6: Final answer
    x = 111,018.75

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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.