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Finding the Fourth Proportional to 143,879.80, 215,819.70 and 114,136.60

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Solution

The fourth proportional to 143,879.80, 215,819.70 and 114,136.60 is: 171,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,879.80 : 215,819.70 = 114,136.60 : x
  2. Step 2: Convert to fraction form
    143,879.80/215,819.70 = 114,136.60/x
  3. Step 3: Cross multiply
    143,879.80x = 215,819.70 × 114,136.60
  4. Step 4: Simplify right side
    143,879.80x = 24,632,926,771.02
  5. Step 5: Solve for x
    x = 24,632,926,771.02/143,879.80
  6. Step 6: Final answer
    x = 171,204.90

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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.