Home / 190,334.92-285,504.40-77,986.30

Finding the Fourth Proportional to 190,334.92, 285,504.40 and 77,986.30

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Solution

The fourth proportional to 190,334.92, 285,504.40 and 77,986.30 is: 116,980.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,334.92 : 285,504.40 = 77,986.30 : x
  2. Step 2: Convert to fraction form
    190,334.92/285,504.40 = 77,986.30/x
  3. Step 3: Cross multiply
    190,334.92x = 285,504.40 × 77,986.30
  4. Step 4: Simplify right side
    190,334.92x = 22,265,431,789.72
  5. Step 5: Solve for x
    x = 22,265,431,789.72/190,334.92
  6. Step 6: Final answer
    x = 116,980.28

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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.