Home / 133,380.45-199,578.60-121,570.65

Finding the Fourth Proportional to 133,380.45, 199,578.60 and 121,570.65

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Solution

The fourth proportional to 133,380.45, 199,578.60 and 121,570.65 is: 181,907.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,380.45 : 199,578.60 = 121,570.65 : x
  2. Step 2: Convert to fraction form
    133,380.45/199,578.60 = 121,570.65/x
  3. Step 3: Cross multiply
    133,380.45x = 199,578.60 × 121,570.65
  4. Step 4: Simplify right side
    133,380.45x = 24,262,900,128.09
  5. Step 5: Solve for x
    x = 24,262,900,128.09/133,380.45
  6. Step 6: Final answer
    x = 181,907.47

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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.