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Finding the Fourth Proportional to 100,145.72, 150,238.70 and 36,966.24

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Solution

The fourth proportional to 100,145.72, 150,238.70 and 36,966.24 is: 55,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,145.72 : 150,238.70 = 36,966.24 : x
  2. Step 2: Convert to fraction form
    100,145.72/150,238.70 = 36,966.24/x
  3. Step 3: Cross multiply
    100,145.72x = 150,238.70 × 36,966.24
  4. Step 4: Simplify right side
    100,145.72x = 5,553,759,399.14
  5. Step 5: Solve for x
    x = 5,553,759,399.14/100,145.72
  6. Step 6: Final answer
    x = 55,456.78

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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.