Home / 190,639.42-285,961.05-57,520.78

Finding the Fourth Proportional to 190,639.42, 285,961.05 and 57,520.78

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Solution

The fourth proportional to 190,639.42, 285,961.05 and 57,520.78 is: 86,281.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,639.42 : 285,961.05 = 57,520.78 : x
  2. Step 2: Convert to fraction form
    190,639.42/285,961.05 = 57,520.78/x
  3. Step 3: Cross multiply
    190,639.42x = 285,961.05 × 57,520.78
  4. Step 4: Simplify right side
    190,639.42x = 16,448,702,645.62
  5. Step 5: Solve for x
    x = 16,448,702,645.62/190,639.42
  6. Step 6: Final answer
    x = 86,281.75

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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.