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Finding the Fourth Proportional to 187,670.91, 280,800.09 and 131,620.43

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Solution

The fourth proportional to 187,670.91, 280,800.09 and 131,620.43 is: 196,935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,670.91 : 280,800.09 = 131,620.43 : x
  2. Step 2: Convert to fraction form
    187,670.91/280,800.09 = 131,620.43/x
  3. Step 3: Cross multiply
    187,670.91x = 280,800.09 × 131,620.43
  4. Step 4: Simplify right side
    187,670.91x = 36,959,027,185.84
  5. Step 5: Solve for x
    x = 36,959,027,185.84/187,670.91
  6. Step 6: Final answer
    x = 196,935.31

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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.