Home / 231,986.91-320,136.66-135,184.71

Finding the Fourth Proportional to 231,986.91, 320,136.66 and 135,184.71

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Solution

The fourth proportional to 231,986.91, 320,136.66 and 135,184.71 is: 186,551.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,986.91 : 320,136.66 = 135,184.71 : x
  2. Step 2: Convert to fraction form
    231,986.91/320,136.66 = 135,184.71/x
  3. Step 3: Cross multiply
    231,986.91x = 320,136.66 × 135,184.71
  4. Step 4: Simplify right side
    231,986.91x = 43,277,581,542.47
  5. Step 5: Solve for x
    x = 43,277,581,542.47/231,986.91
  6. Step 6: Final answer
    x = 186,551.83

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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.