Home / 190,612.56-285,918.84-78,273.66

Finding the Fourth Proportional to 190,612.56, 285,918.84 and 78,273.66

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Solution

The fourth proportional to 190,612.56, 285,918.84 and 78,273.66 is: 117,410.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,612.56 : 285,918.84 = 78,273.66 : x
  2. Step 2: Convert to fraction form
    190,612.56/285,918.84 = 78,273.66/x
  3. Step 3: Cross multiply
    190,612.56x = 285,918.84 × 78,273.66
  4. Step 4: Simplify right side
    190,612.56x = 22,379,914,069.75
  5. Step 5: Solve for x
    x = 22,379,914,069.75/190,612.56
  6. Step 6: Final answer
    x = 117,410.49

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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.