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Finding the Fourth Proportional to 100,568.75, 150,853.06 and 25,686.21

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Solution

The fourth proportional to 100,568.75, 150,853.06 and 25,686.21 is: 38,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,568.75 : 150,853.06 = 25,686.21 : x
  2. Step 2: Convert to fraction form
    100,568.75/150,853.06 = 25,686.21/x
  3. Step 3: Cross multiply
    100,568.75x = 150,853.06 × 25,686.21
  4. Step 4: Simplify right side
    100,568.75x = 3,874,843,249.87
  5. Step 5: Solve for x
    x = 3,874,843,249.87/100,568.75
  6. Step 6: Final answer
    x = 38,529.30

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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.