Home / 85,136.12-127,723.68-25,972.88

Finding the Fourth Proportional to 85,136.12, 127,723.68 and 25,972.88

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Solution

The fourth proportional to 85,136.12, 127,723.68 and 25,972.88 is: 38,965.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,136.12 : 127,723.68 = 25,972.88 : x
  2. Step 2: Convert to fraction form
    85,136.12/127,723.68 = 25,972.88/x
  3. Step 3: Cross multiply
    85,136.12x = 127,723.68 × 25,972.88
  4. Step 4: Simplify right side
    85,136.12x = 3,317,351,813.80
  5. Step 5: Solve for x
    x = 3,317,351,813.80/85,136.12
  6. Step 6: Final answer
    x = 38,965.27

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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.