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Finding the Fourth Proportional to 129,941.81, 194,640.82 and 104,503.80

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Solution

The fourth proportional to 129,941.81, 194,640.82 and 104,503.80 is: 156,537.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,941.81 : 194,640.82 = 104,503.80 : x
  2. Step 2: Convert to fraction form
    129,941.81/194,640.82 = 104,503.80/x
  3. Step 3: Cross multiply
    129,941.81x = 194,640.82 × 104,503.80
  4. Step 4: Simplify right side
    129,941.81x = 20,340,705,063.86
  5. Step 5: Solve for x
    x = 20,340,705,063.86/129,941.81
  6. Step 6: Final answer
    x = 156,537.04

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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.