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Finding the Fourth Proportional to 201,093.60, 301,640.40 and 76,418.40

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Solution

The fourth proportional to 201,093.60, 301,640.40 and 76,418.40 is: 114,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,093.60 : 301,640.40 = 76,418.40 : x
  2. Step 2: Convert to fraction form
    201,093.60/301,640.40 = 76,418.40/x
  3. Step 3: Cross multiply
    201,093.60x = 301,640.40 × 76,418.40
  4. Step 4: Simplify right side
    201,093.60x = 23,050,876,743.36
  5. Step 5: Solve for x
    x = 23,050,876,743.36/201,093.60
  6. Step 6: Final answer
    x = 114,627.60

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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.