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Finding the Fourth Proportional to 190,239.66, 285,371.78 and 63,874.80

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Solution

The fourth proportional to 190,239.66, 285,371.78 and 63,874.80 is: 95,816.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,239.66 : 285,371.78 = 63,874.80 : x
  2. Step 2: Convert to fraction form
    190,239.66/285,371.78 = 63,874.80/x
  3. Step 3: Cross multiply
    190,239.66x = 285,371.78 × 63,874.80
  4. Step 4: Simplify right side
    190,239.66x = 18,228,065,373.14
  5. Step 5: Solve for x
    x = 18,228,065,373.14/190,239.66
  6. Step 6: Final answer
    x = 95,816.33

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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.