Home / 144,131.90-198,897.87-80,468.33

Finding the Fourth Proportional to 144,131.90, 198,897.87 and 80,468.33

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Solution

The fourth proportional to 144,131.90, 198,897.87 and 80,468.33 is: 111,043.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,131.90 : 198,897.87 = 80,468.33 : x
  2. Step 2: Convert to fraction form
    144,131.90/198,897.87 = 80,468.33/x
  3. Step 3: Cross multiply
    144,131.90x = 198,897.87 × 80,468.33
  4. Step 4: Simplify right side
    144,131.90x = 16,004,978,444.97
  5. Step 5: Solve for x
    x = 16,004,978,444.97/144,131.90
  6. Step 6: Final answer
    x = 111,043.97

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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.