Home / 104,121.60-156,159-47,907.78

Finding the Fourth Proportional to 104,121.60, 156,159 and 47,907.78

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Solution

The fourth proportional to 104,121.60, 156,159 and 47,907.78 is: 71,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,121.60 : 156,159 = 47,907.78 : x
  2. Step 2: Convert to fraction form
    104,121.60/156,159 = 47,907.78/x
  3. Step 3: Cross multiply
    104,121.60x = 156,159 × 47,907.78
  4. Step 4: Simplify right side
    104,121.60x = 7,481,231,017.02
  5. Step 5: Solve for x
    x = 7,481,231,017.02/104,121.60
  6. Step 6: Final answer
    x = 71,850.90

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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.