Home / 131,728.26-181,735.38-86,431.22

Finding the Fourth Proportional to 131,728.26, 181,735.38 and 86,431.22

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Solution

The fourth proportional to 131,728.26, 181,735.38 and 86,431.22 is: 119,242.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,728.26 : 181,735.38 = 86,431.22 : x
  2. Step 2: Convert to fraction form
    131,728.26/181,735.38 = 86,431.22/x
  3. Step 3: Cross multiply
    131,728.26x = 181,735.38 × 86,431.22
  4. Step 4: Simplify right side
    131,728.26x = 15,707,610,610.56
  5. Step 5: Solve for x
    x = 15,707,610,610.56/131,728.26
  6. Step 6: Final answer
    x = 119,242.53

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1.5x scale

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.