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Finding the Fourth Proportional to 201,120.53, 301,791.60 and 122,290.11

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Solution

The fourth proportional to 201,120.53, 301,791.60 and 122,290.11 is: 183,502.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,120.53 : 301,791.60 = 122,290.11 : x
  2. Step 2: Convert to fraction form
    201,120.53/301,791.60 = 122,290.11/x
  3. Step 3: Cross multiply
    201,120.53x = 301,791.60 × 122,290.11
  4. Step 4: Simplify right side
    201,120.53x = 36,906,127,961.08
  5. Step 5: Solve for x
    x = 36,906,127,961.08/201,120.53
  6. Step 6: Final answer
    x = 183,502.54

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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.