Home / 189,804.16-261,919.46-104,915.75

Finding the Fourth Proportional to 189,804.16, 261,919.46 and 104,915.75

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Solution

The fourth proportional to 189,804.16, 261,919.46 and 104,915.75 is: 144,778.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,804.16 : 261,919.46 = 104,915.75 : x
  2. Step 2: Convert to fraction form
    189,804.16/261,919.46 = 104,915.75/x
  3. Step 3: Cross multiply
    189,804.16x = 261,919.46 × 104,915.75
  4. Step 4: Simplify right side
    189,804.16x = 27,479,476,060.92
  5. Step 5: Solve for x
    x = 27,479,476,060.92/189,804.16
  6. Step 6: Final answer
    x = 144,778.05

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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.