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Finding the Fourth Proportional to 199,626.60, 299,094.30 and 129,469.80

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Solution

The fourth proportional to 199,626.60, 299,094.30 and 129,469.80 is: 193,980.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,626.60 : 299,094.30 = 129,469.80 : x
  2. Step 2: Convert to fraction form
    199,626.60/299,094.30 = 129,469.80/x
  3. Step 3: Cross multiply
    199,626.60x = 299,094.30 × 129,469.80
  4. Step 4: Simplify right side
    199,626.60x = 38,723,679,202.14
  5. Step 5: Solve for x
    x = 38,723,679,202.14/199,626.60
  6. Step 6: Final answer
    x = 193,980.56

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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.