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Finding the Fourth Proportional to 150,811.88, 208,104.44 and 87,169.88

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Solution

The fourth proportional to 150,811.88, 208,104.44 and 87,169.88 is: 120,285.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,811.88 : 208,104.44 = 87,169.88 : x
  2. Step 2: Convert to fraction form
    150,811.88/208,104.44 = 87,169.88/x
  3. Step 3: Cross multiply
    150,811.88x = 208,104.44 × 87,169.88
  4. Step 4: Simplify right side
    150,811.88x = 18,140,439,062.27
  5. Step 5: Solve for x
    x = 18,140,439,062.27/150,811.88
  6. Step 6: Final answer
    x = 120,285.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.