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Finding the Fourth Proportional to 135,790.92, 187,391.22 and 75,362.31

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Solution

The fourth proportional to 135,790.92, 187,391.22 and 75,362.31 is: 103,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,790.92 : 187,391.22 = 75,362.31 : x
  2. Step 2: Convert to fraction form
    135,790.92/187,391.22 = 75,362.31/x
  3. Step 3: Cross multiply
    135,790.92x = 187,391.22 × 75,362.31
  4. Step 4: Simplify right side
    135,790.92x = 14,122,235,212.92
  5. Step 5: Solve for x
    x = 14,122,235,212.92/135,790.92
  6. Step 6: Final answer
    x = 103,999.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.