Home / 187,231.40-280,847.10-68,906.60

Finding the Fourth Proportional to 187,231.40, 280,847.10 and 68,906.60

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Solution

The fourth proportional to 187,231.40, 280,847.10 and 68,906.60 is: 103,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,231.40 : 280,847.10 = 68,906.60 : x
  2. Step 2: Convert to fraction form
    187,231.40/280,847.10 = 68,906.60/x
  3. Step 3: Cross multiply
    187,231.40x = 280,847.10 × 68,906.60
  4. Step 4: Simplify right side
    187,231.40x = 19,352,218,780.86
  5. Step 5: Solve for x
    x = 19,352,218,780.86/187,231.40
  6. Step 6: Final answer
    x = 103,359.90

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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.