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Finding the Fourth Proportional to 133,481.70, 199,930.95 and 103,665.60

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Solution

The fourth proportional to 133,481.70, 199,930.95 and 103,665.60 is: 155,271.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,481.70 : 199,930.95 = 103,665.60 : x
  2. Step 2: Convert to fraction form
    133,481.70/199,930.95 = 103,665.60/x
  3. Step 3: Cross multiply
    133,481.70x = 199,930.95 × 103,665.60
  4. Step 4: Simplify right side
    133,481.70x = 20,725,961,890.32
  5. Step 5: Solve for x
    x = 20,725,961,890.32/133,481.70
  6. Step 6: Final answer
    x = 155,271.94

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1.5x scale

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.