Home / 190,664.51-285,997.11-78,266.39

Finding the Fourth Proportional to 190,664.51, 285,997.11 and 78,266.39

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Solution

The fourth proportional to 190,664.51, 285,997.11 and 78,266.39 is: 117,399.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,664.51 : 285,997.11 = 78,266.39 : x
  2. Step 2: Convert to fraction form
    190,664.51/285,997.11 = 78,266.39/x
  3. Step 3: Cross multiply
    190,664.51x = 285,997.11 × 78,266.39
  4. Step 4: Simplify right side
    190,664.51x = 22,383,961,350.13
  5. Step 5: Solve for x
    x = 22,383,961,350.13/190,664.51
  6. Step 6: Final answer
    x = 117,399.73

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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.