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Finding the Fourth Proportional to 190,480.73, 262,863.78 and 105,597.79

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Solution

The fourth proportional to 190,480.73, 262,863.78 and 105,597.79 is: 145,725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,480.73 : 262,863.78 = 105,597.79 : x
  2. Step 2: Convert to fraction form
    190,480.73/262,863.78 = 105,597.79/x
  3. Step 3: Cross multiply
    190,480.73x = 262,863.78 × 105,597.79
  4. Step 4: Simplify right side
    190,480.73x = 27,757,834,239.05
  5. Step 5: Solve for x
    x = 27,757,834,239.05/190,480.73
  6. Step 6: Final answer
    x = 145,725.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.