Home / 149,745.30-206,649.22-81,763.64

Finding the Fourth Proportional to 149,745.30, 206,649.22 and 81,763.64

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Solution

The fourth proportional to 149,745.30, 206,649.22 and 81,763.64 is: 112,834.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,745.30 : 206,649.22 = 81,763.64 : x
  2. Step 2: Convert to fraction form
    149,745.30/206,649.22 = 81,763.64/x
  3. Step 3: Cross multiply
    149,745.30x = 206,649.22 × 81,763.64
  4. Step 4: Simplify right side
    149,745.30x = 16,896,392,430.36
  5. Step 5: Solve for x
    x = 16,896,392,430.36/149,745.30
  6. Step 6: Final answer
    x = 112,834.21

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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.