Home / 149,401.46-206,171.24-81,418.91

Finding the Fourth Proportional to 149,401.46, 206,171.24 and 81,418.91

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Solution

The fourth proportional to 149,401.46, 206,171.24 and 81,418.91 is: 112,356.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,401.46 : 206,171.24 = 81,418.91 : x
  2. Step 2: Convert to fraction form
    149,401.46/206,171.24 = 81,418.91/x
  3. Step 3: Cross multiply
    149,401.46x = 206,171.24 × 81,418.91
  4. Step 4: Simplify right side
    149,401.46x = 16,786,236,806.84
  5. Step 5: Solve for x
    x = 16,786,236,806.84/149,401.46
  6. Step 6: Final answer
    x = 112,356.58

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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.