Home / 190,643.24-285,778.92-90,776.60

Finding the Fourth Proportional to 190,643.24, 285,778.92 and 90,776.60

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Solution

The fourth proportional to 190,643.24, 285,778.92 and 90,776.60 is: 136,076.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,643.24 : 285,778.92 = 90,776.60 : x
  2. Step 2: Convert to fraction form
    190,643.24/285,778.92 = 90,776.60/x
  3. Step 3: Cross multiply
    190,643.24x = 285,778.92 × 90,776.60
  4. Step 4: Simplify right side
    190,643.24x = 25,942,038,709.27
  5. Step 5: Solve for x
    x = 25,942,038,709.27/190,643.24
  6. Step 6: Final answer
    x = 136,076.36

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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.