Home / 215,999.56-324,143.94-89,639.92

Finding the Fourth Proportional to 215,999.56, 324,143.94 and 89,639.92

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Solution

The fourth proportional to 215,999.56, 324,143.94 and 89,639.92 is: 134,519.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,999.56 : 324,143.94 = 89,639.92 : x
  2. Step 2: Convert to fraction form
    215,999.56/324,143.94 = 89,639.92/x
  3. Step 3: Cross multiply
    215,999.56x = 324,143.94 × 89,639.92
  4. Step 4: Simplify right side
    215,999.56x = 29,056,236,850.08
  5. Step 5: Solve for x
    x = 29,056,236,850.08/215,999.56
  6. Step 6: Final answer
    x = 134,519.89

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1.5x scale

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.