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Finding the Fourth Proportional to 101,189.20, 151,783.80 and 38,861.20

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Solution

The fourth proportional to 101,189.20, 151,783.80 and 38,861.20 is: 58,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,189.20 : 151,783.80 = 38,861.20 : x
  2. Step 2: Convert to fraction form
    101,189.20/151,783.80 = 38,861.20/x
  3. Step 3: Cross multiply
    101,189.20x = 151,783.80 × 38,861.20
  4. Step 4: Simplify right side
    101,189.20x = 5,898,500,608.56
  5. Step 5: Solve for x
    x = 5,898,500,608.56/101,189.20
  6. Step 6: Final answer
    x = 58,291.80

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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.