Home / 190,920.81-263,253.33-121,917.33

Finding the Fourth Proportional to 190,920.81, 263,253.33 and 121,917.33

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Solution

The fourth proportional to 190,920.81, 263,253.33 and 121,917.33 is: 168,107.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,920.81 : 263,253.33 = 121,917.33 : x
  2. Step 2: Convert to fraction form
    190,920.81/263,253.33 = 121,917.33/x
  3. Step 3: Cross multiply
    190,920.81x = 263,253.33 × 121,917.33
  4. Step 4: Simplify right side
    190,920.81x = 32,095,143,107.21
  5. Step 5: Solve for x
    x = 32,095,143,107.21/190,920.81
  6. Step 6: Final answer
    x = 168,107.10

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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.