Home / 148,403.54-204,796.41-80,420.78

Finding the Fourth Proportional to 148,403.54, 204,796.41 and 80,420.78

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Solution

The fourth proportional to 148,403.54, 204,796.41 and 80,420.78 is: 110,980.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,403.54 : 204,796.41 = 80,420.78 : x
  2. Step 2: Convert to fraction form
    148,403.54/204,796.41 = 80,420.78/x
  3. Step 3: Cross multiply
    148,403.54x = 204,796.41 × 80,420.78
  4. Step 4: Simplify right side
    148,403.54x = 16,469,887,033.40
  5. Step 5: Solve for x
    x = 16,469,887,033.40/148,403.54
  6. Step 6: Final answer
    x = 110,980.42

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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.