Home / 149,843.74-206,788.38-81,863.58

Finding the Fourth Proportional to 149,843.74, 206,788.38 and 81,863.58

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Solution

The fourth proportional to 149,843.74, 206,788.38 and 81,863.58 is: 112,973.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,843.74 : 206,788.38 = 81,863.58 : x
  2. Step 2: Convert to fraction form
    149,843.74/206,788.38 = 81,863.58/x
  3. Step 3: Cross multiply
    149,843.74x = 206,788.38 × 81,863.58
  4. Step 4: Simplify right side
    149,843.74x = 16,928,437,089.20
  5. Step 5: Solve for x
    x = 16,928,437,089.20/149,843.74
  6. Step 6: Final answer
    x = 112,973.94

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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.