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Finding the Fourth Proportional to 187,099.31, 280,520.87 and 67,153.60

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Solution

The fourth proportional to 187,099.31, 280,520.87 and 67,153.60 is: 100,684.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,099.31 : 280,520.87 = 67,153.60 : x
  2. Step 2: Convert to fraction form
    187,099.31/280,520.87 = 67,153.60/x
  3. Step 3: Cross multiply
    187,099.31x = 280,520.87 × 67,153.60
  4. Step 4: Simplify right side
    187,099.31x = 18,837,986,295.63
  5. Step 5: Solve for x
    x = 18,837,986,295.63/187,099.31
  6. Step 6: Final answer
    x = 100,684.42

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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.