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Finding the Fourth Proportional to 101,099.90, 151,669.28 and 38,765.54

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Solution

The fourth proportional to 101,099.90, 151,669.28 and 38,765.54 is: 58,155.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,099.90 : 151,669.28 = 38,765.54 : x
  2. Step 2: Convert to fraction form
    101,099.90/151,669.28 = 38,765.54/x
  3. Step 3: Cross multiply
    101,099.90x = 151,669.28 × 38,765.54
  4. Step 4: Simplify right side
    101,099.90x = 5,879,540,588.44
  5. Step 5: Solve for x
    x = 5,879,540,588.44/101,099.90
  6. Step 6: Final answer
    x = 58,155.75

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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.