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Finding the Fourth Proportional to 129,763.26, 194,265.72 and 117,311.94

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Solution

The fourth proportional to 129,763.26, 194,265.72 and 117,311.94 is: 175,625.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,763.26 : 194,265.72 = 117,311.94 : x
  2. Step 2: Convert to fraction form
    129,763.26/194,265.72 = 117,311.94/x
  3. Step 3: Cross multiply
    129,763.26x = 194,265.72 × 117,311.94
  4. Step 4: Simplify right side
    129,763.26x = 22,789,688,488.70
  5. Step 5: Solve for x
    x = 22,789,688,488.70/129,763.26
  6. Step 6: Final answer
    x = 175,625.12

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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.