Home / 190,039-285,134.62-71,743.90

Finding the Fourth Proportional to 190,039, 285,134.62 and 71,743.90

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Solution

The fourth proportional to 190,039, 285,134.62 and 71,743.90 is: 107,644.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,039 : 285,134.62 = 71,743.90 : x
  2. Step 2: Convert to fraction form
    190,039/285,134.62 = 71,743.90/x
  3. Step 3: Cross multiply
    190,039x = 285,134.62 × 71,743.90
  4. Step 4: Simplify right side
    190,039x = 20,456,669,663.82
  5. Step 5: Solve for x
    x = 20,456,669,663.82/190,039
  6. Step 6: Final answer
    x = 107,644.59

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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.