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Finding the Fourth Proportional to 187,246.08, 280,632.60 and 81,939.60

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Solution

The fourth proportional to 187,246.08, 280,632.60 and 81,939.60 is: 122,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,246.08 : 280,632.60 = 81,939.60 : x
  2. Step 2: Convert to fraction form
    187,246.08/280,632.60 = 81,939.60/x
  3. Step 3: Cross multiply
    187,246.08x = 280,632.60 × 81,939.60
  4. Step 4: Simplify right side
    187,246.08x = 22,994,922,990.96
  5. Step 5: Solve for x
    x = 22,994,922,990.96/187,246.08
  6. Step 6: Final answer
    x = 122,805.90

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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.