Home / 109,405.56-150,993.05-61,667.61

Finding the Fourth Proportional to 109,405.56, 150,993.05 and 61,667.61

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Solution

The fourth proportional to 109,405.56, 150,993.05 and 61,667.61 is: 85,108.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,405.56 : 150,993.05 = 61,667.61 : x
  2. Step 2: Convert to fraction form
    109,405.56/150,993.05 = 61,667.61/x
  3. Step 3: Cross multiply
    109,405.56x = 150,993.05 × 61,667.61
  4. Step 4: Simplify right side
    109,405.56x = 9,311,380,520.11
  5. Step 5: Solve for x
    x = 9,311,380,520.11/109,405.56
  6. Step 6: Final answer
    x = 85,108.84

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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.