Home / 190,810.76-285,879.34-115,778.53

Finding the Fourth Proportional to 190,810.76, 285,879.34 and 115,778.53

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Solution

The fourth proportional to 190,810.76, 285,879.34 and 115,778.53 is: 173,463.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,810.76 : 285,879.34 = 115,778.53 : x
  2. Step 2: Convert to fraction form
    190,810.76/285,879.34 = 115,778.53/x
  3. Step 3: Cross multiply
    190,810.76x = 285,879.34 × 115,778.53
  4. Step 4: Simplify right side
    190,810.76x = 33,098,690,244.64
  5. Step 5: Solve for x
    x = 33,098,690,244.64/190,810.76
  6. Step 6: Final answer
    x = 173,463.44

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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.