Home / 190,639.69-263,114.31-105,784.09

Finding the Fourth Proportional to 190,639.69, 263,114.31 and 105,784.09

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Solution

The fourth proportional to 190,639.69, 263,114.31 and 105,784.09 is: 145,999.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,639.69 : 263,114.31 = 105,784.09 : x
  2. Step 2: Convert to fraction form
    190,639.69/263,114.31 = 105,784.09/x
  3. Step 3: Cross multiply
    190,639.69x = 263,114.31 × 105,784.09
  4. Step 4: Simplify right side
    190,639.69x = 27,833,307,849.33
  5. Step 5: Solve for x
    x = 27,833,307,849.33/190,639.69
  6. Step 6: Final answer
    x = 145,999.54

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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.