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Finding the Fourth Proportional to 201,101.20, 301,392.60 and 122,131.60

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Solution

The fourth proportional to 201,101.20, 301,392.60 and 122,131.60 is: 183,039.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,101.20 : 301,392.60 = 122,131.60 : x
  2. Step 2: Convert to fraction form
    201,101.20/301,392.60 = 122,131.60/x
  3. Step 3: Cross multiply
    201,101.20x = 301,392.60 × 122,131.60
  4. Step 4: Simplify right side
    201,101.20x = 36,809,560,466.16
  5. Step 5: Solve for x
    x = 36,809,560,466.16/201,101.20
  6. Step 6: Final answer
    x = 183,039.98

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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.