Home / 231,895.77-320,049.99-129,928.16

Finding the Fourth Proportional to 231,895.77, 320,049.99 and 129,928.16

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Solution

The fourth proportional to 231,895.77, 320,049.99 and 129,928.16 is: 179,319.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,895.77 : 320,049.99 = 129,928.16 : x
  2. Step 2: Convert to fraction form
    231,895.77/320,049.99 = 129,928.16/x
  3. Step 3: Cross multiply
    231,895.77x = 320,049.99 × 129,928.16
  4. Step 4: Simplify right side
    231,895.77x = 41,583,504,708.47
  5. Step 5: Solve for x
    x = 41,583,504,708.47/231,895.77
  6. Step 6: Final answer
    x = 179,319.81

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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.