Home / 91,269.11-136,762.55-71,231.09

Finding the Fourth Proportional to 91,269.11, 136,762.55 and 71,231.09

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Solution

The fourth proportional to 91,269.11, 136,762.55 and 71,231.09 is: 106,736.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,269.11 : 136,762.55 = 71,231.09 : x
  2. Step 2: Convert to fraction form
    91,269.11/136,762.55 = 71,231.09/x
  3. Step 3: Cross multiply
    91,269.11x = 136,762.55 × 71,231.09
  4. Step 4: Simplify right side
    91,269.11x = 9,741,745,507.68
  5. Step 5: Solve for x
    x = 9,741,745,507.68/91,269.11
  6. Step 6: Final answer
    x = 106,736.51

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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.