Home / 144,165.16-198,945.54-80,503.72

Finding the Fourth Proportional to 144,165.16, 198,945.54 and 80,503.72

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Solution

The fourth proportional to 144,165.16, 198,945.54 and 80,503.72 is: 111,093.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,165.16 : 198,945.54 = 80,503.72 : x
  2. Step 2: Convert to fraction form
    144,165.16/198,945.54 = 80,503.72/x
  3. Step 3: Cross multiply
    144,165.16x = 198,945.54 × 80,503.72
  4. Step 4: Simplify right side
    144,165.16x = 16,015,856,047.41
  5. Step 5: Solve for x
    x = 16,015,856,047.41/144,165.16
  6. Step 6: Final answer
    x = 111,093.80

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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.