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Finding the Fourth Proportional to 192,718.56, 289,191.75 and 107,400.66

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Solution

The fourth proportional to 192,718.56, 289,191.75 and 107,400.66 is: 161,164.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,718.56 : 289,191.75 = 107,400.66 : x
  2. Step 2: Convert to fraction form
    192,718.56/289,191.75 = 107,400.66/x
  3. Step 3: Cross multiply
    192,718.56x = 289,191.75 × 107,400.66
  4. Step 4: Simplify right side
    192,718.56x = 31,059,383,370.60
  5. Step 5: Solve for x
    x = 31,059,383,370.60/192,718.56
  6. Step 6: Final answer
    x = 161,164.46

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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.