Home / 85,136.97-127,705.11-25,972.45

Finding the Fourth Proportional to 85,136.97, 127,705.11 and 25,972.45

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Solution

The fourth proportional to 85,136.97, 127,705.11 and 25,972.45 is: 38,958.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,136.97 : 127,705.11 = 25,972.45 : x
  2. Step 2: Convert to fraction form
    85,136.97/127,705.11 = 25,972.45/x
  3. Step 3: Cross multiply
    85,136.97x = 127,705.11 × 25,972.45
  4. Step 4: Simplify right side
    85,136.97x = 3,316,814,167.56
  5. Step 5: Solve for x
    x = 3,316,814,167.56/85,136.97
  6. Step 6: Final answer
    x = 38,958.56

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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.