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Finding the Fourth Proportional to 100,939.85, 151,431.95 and 29,856.94

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Solution

The fourth proportional to 100,939.85, 151,431.95 and 29,856.94 is: 44,791.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,939.85 : 151,431.95 = 29,856.94 : x
  2. Step 2: Convert to fraction form
    100,939.85/151,431.95 = 29,856.94/x
  3. Step 3: Cross multiply
    100,939.85x = 151,431.95 × 29,856.94
  4. Step 4: Simplify right side
    100,939.85x = 4,521,294,117.37
  5. Step 5: Solve for x
    x = 4,521,294,117.37/100,939.85
  6. Step 6: Final answer
    x = 44,791.96

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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.