Home / 198,112.80-296,644.32-104,421.72

Finding the Fourth Proportional to 198,112.80, 296,644.32 and 104,421.72

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Solution

The fourth proportional to 198,112.80, 296,644.32 and 104,421.72 is: 156,355.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,112.80 : 296,644.32 = 104,421.72 : x
  2. Step 2: Convert to fraction form
    198,112.80/296,644.32 = 104,421.72/x
  3. Step 3: Cross multiply
    198,112.80x = 296,644.32 × 104,421.72
  4. Step 4: Simplify right side
    198,112.80x = 30,976,110,122.63
  5. Step 5: Solve for x
    x = 30,976,110,122.63/198,112.80
  6. Step 6: Final answer
    x = 156,355.93

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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.