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Finding the Fourth Proportional to 100,392.37, 150,292.68 and 87,936.73

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Solution

The fourth proportional to 100,392.37, 150,292.68 and 87,936.73 is: 131,645.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,392.37 : 150,292.68 = 87,936.73 : x
  2. Step 2: Convert to fraction form
    100,392.37/150,292.68 = 87,936.73/x
  3. Step 3: Cross multiply
    100,392.37x = 150,292.68 × 87,936.73
  4. Step 4: Simplify right side
    100,392.37x = 13,216,246,822.14
  5. Step 5: Solve for x
    x = 13,216,246,822.14/100,392.37
  6. Step 6: Final answer
    x = 131,645.93

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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.