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Finding the Fourth Proportional to 129,489.92, 194,200.32 and 36,000.80

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Solution

The fourth proportional to 129,489.92, 194,200.32 and 36,000.80 is: 53,991.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,489.92 : 194,200.32 = 36,000.80 : x
  2. Step 2: Convert to fraction form
    129,489.92/194,200.32 = 36,000.80/x
  3. Step 3: Cross multiply
    129,489.92x = 194,200.32 × 36,000.80
  4. Step 4: Simplify right side
    129,489.92x = 6,991,366,880.26
  5. Step 5: Solve for x
    x = 6,991,366,880.26/129,489.92
  6. Step 6: Final answer
    x = 53,991.59

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1.5x scale

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.