Home / 149,765.25-206,676.41-81,782.36

Finding the Fourth Proportional to 149,765.25, 206,676.41 and 81,782.36

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Solution

The fourth proportional to 149,765.25, 206,676.41 and 81,782.36 is: 112,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,765.25 : 206,676.41 = 81,782.36 : x
  2. Step 2: Convert to fraction form
    149,765.25/206,676.41 = 81,782.36/x
  3. Step 3: Cross multiply
    149,765.25x = 206,676.41 × 81,782.36
  4. Step 4: Simplify right side
    149,765.25x = 16,902,483,123.83
  5. Step 5: Solve for x
    x = 16,902,483,123.83/149,765.25
  6. Step 6: Final answer
    x = 112,859.85

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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.