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Finding the Fourth Proportional to 198,533.03, 273,978.25 and 107,890.79

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Solution

The fourth proportional to 198,533.03, 273,978.25 and 107,890.79 is: 148,890.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,533.03 : 273,978.25 = 107,890.79 : x
  2. Step 2: Convert to fraction form
    198,533.03/273,978.25 = 107,890.79/x
  3. Step 3: Cross multiply
    198,533.03x = 273,978.25 × 107,890.79
  4. Step 4: Simplify right side
    198,533.03x = 29,559,728,195.70
  5. Step 5: Solve for x
    x = 29,559,728,195.70/198,533.03
  6. Step 6: Final answer
    x = 148,890.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.