Home / 149,004.85-205,627.70-81,022.56

Finding the Fourth Proportional to 149,004.85, 205,627.70 and 81,022.56

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Solution

The fourth proportional to 149,004.85, 205,627.70 and 81,022.56 is: 111,811.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,004.85 : 205,627.70 = 81,022.56 : x
  2. Step 2: Convert to fraction form
    149,004.85/205,627.70 = 81,022.56/x
  3. Step 3: Cross multiply
    149,004.85x = 205,627.70 × 81,022.56
  4. Step 4: Simplify right side
    149,004.85x = 16,660,482,660.91
  5. Step 5: Solve for x
    x = 16,660,482,660.91/149,004.85
  6. Step 6: Final answer
    x = 111,811.68

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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.