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Finding the Fourth Proportional to 100,990.56, 151,508.01 and 29,918.76

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Solution

The fourth proportional to 100,990.56, 151,508.01 and 29,918.76 is: 44,884.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,990.56 : 151,508.01 = 29,918.76 : x
  2. Step 2: Convert to fraction form
    100,990.56/151,508.01 = 29,918.76/x
  3. Step 3: Cross multiply
    100,990.56x = 151,508.01 × 29,918.76
  4. Step 4: Simplify right side
    100,990.56x = 4,532,931,789.27
  5. Step 5: Solve for x
    x = 4,532,931,789.27/100,990.56
  6. Step 6: Final answer
    x = 44,884.71

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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.