Home / 149,286.23-206,015.21-81,303.50

Finding the Fourth Proportional to 149,286.23, 206,015.21 and 81,303.50

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Solution

The fourth proportional to 149,286.23, 206,015.21 and 81,303.50 is: 112,198.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,286.23 : 206,015.21 = 81,303.50 : x
  2. Step 2: Convert to fraction form
    149,286.23/206,015.21 = 81,303.50/x
  3. Step 3: Cross multiply
    149,286.23x = 206,015.21 × 81,303.50
  4. Step 4: Simplify right side
    149,286.23x = 16,749,756,189.64
  5. Step 5: Solve for x
    x = 16,749,756,189.64/149,286.23
  6. Step 6: Final answer
    x = 112,198.94

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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.