Home / 89,186.24-122,975.20-71,268.96

Finding the Fourth Proportional to 89,186.24, 122,975.20 and 71,268.96

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Solution

The fourth proportional to 89,186.24, 122,975.20 and 71,268.96 is: 98,269.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,186.24 : 122,975.20 = 71,268.96 : x
  2. Step 2: Convert to fraction form
    89,186.24/122,975.20 = 71,268.96/x
  3. Step 3: Cross multiply
    89,186.24x = 122,975.20 × 71,268.96
  4. Step 4: Simplify right side
    89,186.24x = 8,764,314,609.79
  5. Step 5: Solve for x
    x = 8,764,314,609.79/89,186.24
  6. Step 6: Final answer
    x = 98,269.81

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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.