Home / 149,589.90-206,435.04-81,607.94

Finding the Fourth Proportional to 149,589.90, 206,435.04 and 81,607.94

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Solution

The fourth proportional to 149,589.90, 206,435.04 and 81,607.94 is: 112,619.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,589.90 : 206,435.04 = 81,607.94 : x
  2. Step 2: Convert to fraction form
    149,589.90/206,435.04 = 81,607.94/x
  3. Step 3: Cross multiply
    149,589.90x = 206,435.04 × 81,607.94
  4. Step 4: Simplify right side
    149,589.90x = 16,846,738,358.22
  5. Step 5: Solve for x
    x = 16,846,738,358.22/149,589.90
  6. Step 6: Final answer
    x = 112,619.49

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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.