Home / 82,136.91-123,220.53-25,991.13

Finding the Fourth Proportional to 82,136.91, 123,220.53 and 25,991.13

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Solution

The fourth proportional to 82,136.91, 123,220.53 and 25,991.13 is: 38,991.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,136.91 : 123,220.53 = 25,991.13 : x
  2. Step 2: Convert to fraction form
    82,136.91/123,220.53 = 25,991.13/x
  3. Step 3: Cross multiply
    82,136.91x = 123,220.53 × 25,991.13
  4. Step 4: Simplify right side
    82,136.91x = 3,202,640,813.90
  5. Step 5: Solve for x
    x = 3,202,640,813.90/82,136.91
  6. Step 6: Final answer
    x = 38,991.49

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1.5x scale

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.