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Finding the Fourth Proportional to 190,108.80, 285,163.20 and 188,796.60

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Solution

The fourth proportional to 190,108.80, 285,163.20 and 188,796.60 is: 283,194.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,108.80 : 285,163.20 = 188,796.60 : x
  2. Step 2: Convert to fraction form
    190,108.80/285,163.20 = 188,796.60/x
  3. Step 3: Cross multiply
    190,108.80x = 285,163.20 × 188,796.60
  4. Step 4: Simplify right side
    190,108.80x = 53,837,842,605.12
  5. Step 5: Solve for x
    x = 53,837,842,605.12/190,108.80
  6. Step 6: Final answer
    x = 283,194.90

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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.