Home / 103,629.70-155,447.86-28,750.60

Finding the Fourth Proportional to 103,629.70, 155,447.86 and 28,750.60

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Solution

The fourth proportional to 103,629.70, 155,447.86 and 28,750.60 is: 43,126.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,629.70 : 155,447.86 = 28,750.60 : x
  2. Step 2: Convert to fraction form
    103,629.70/155,447.86 = 28,750.60/x
  3. Step 3: Cross multiply
    103,629.70x = 155,447.86 × 28,750.60
  4. Step 4: Simplify right side
    103,629.70x = 4,469,219,243.72
  5. Step 5: Solve for x
    x = 4,469,219,243.72/103,629.70
  6. Step 6: Final answer
    x = 43,126.82

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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.