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Finding the Fourth Proportional to 129,797.60, 194,782.80 and 59,640.80

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Solution

The fourth proportional to 129,797.60, 194,782.80 and 59,640.80 is: 89,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,797.60 : 194,782.80 = 59,640.80 : x
  2. Step 2: Convert to fraction form
    129,797.60/194,782.80 = 59,640.80/x
  3. Step 3: Cross multiply
    129,797.60x = 194,782.80 × 59,640.80
  4. Step 4: Simplify right side
    129,797.60x = 11,617,002,018.24
  5. Step 5: Solve for x
    x = 11,617,002,018.24/129,797.60
  6. Step 6: Final answer
    x = 89,500.90

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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.