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Finding the Fourth Proportional to 100,538.70, 150,917.40 and 56,251.95

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Solution

The fourth proportional to 100,538.70, 150,917.40 and 56,251.95 is: 84,439.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,538.70 : 150,917.40 = 56,251.95 : x
  2. Step 2: Convert to fraction form
    100,538.70/150,917.40 = 56,251.95/x
  3. Step 3: Cross multiply
    100,538.70x = 150,917.40 × 56,251.95
  4. Step 4: Simplify right side
    100,538.70x = 8,489,398,038.93
  5. Step 5: Solve for x
    x = 8,489,398,038.93/100,538.70
  6. Step 6: Final answer
    x = 84,439.11

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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.