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Finding the Fourth Proportional to 127,067, 190,595 and 42,821.60

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Solution

The fourth proportional to 127,067, 190,595 and 42,821.60 is: 64,230.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,067 : 190,595 = 42,821.60 : x
  2. Step 2: Convert to fraction form
    127,067/190,595 = 42,821.60/x
  3. Step 3: Cross multiply
    127,067x = 190,595 × 42,821.60
  4. Step 4: Simplify right side
    127,067x = 8,161,582,852
  5. Step 5: Solve for x
    x = 8,161,582,852/127,067
  6. Step 6: Final answer
    x = 64,230.55

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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.