Home / 189,377.39-261,340.66-121,394.33

Finding the Fourth Proportional to 189,377.39, 261,340.66 and 121,394.33

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Solution

The fourth proportional to 189,377.39, 261,340.66 and 121,394.33 is: 167,524.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,377.39 : 261,340.66 = 121,394.33 : x
  2. Step 2: Convert to fraction form
    189,377.39/261,340.66 = 121,394.33/x
  3. Step 3: Cross multiply
    189,377.39x = 261,340.66 × 121,394.33
  4. Step 4: Simplify right side
    189,377.39x = 31,725,274,147.52
  5. Step 5: Solve for x
    x = 31,725,274,147.52/189,377.39
  6. Step 6: Final answer
    x = 167,524.08

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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.