Home / 149,879.99-206,828.22-81,899.30

Finding the Fourth Proportional to 149,879.99, 206,828.22 and 81,899.30

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Solution

The fourth proportional to 149,879.99, 206,828.22 and 81,899.30 is: 113,017.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,879.99 : 206,828.22 = 81,899.30 : x
  2. Step 2: Convert to fraction form
    149,879.99/206,828.22 = 81,899.30/x
  3. Step 3: Cross multiply
    149,879.99x = 206,828.22 × 81,899.30
  4. Step 4: Simplify right side
    149,879.99x = 16,939,086,179.71
  5. Step 5: Solve for x
    x = 16,939,086,179.71/149,879.99
  6. Step 6: Final answer
    x = 113,017.66

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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.