Home / 149,956.51-206,940.39-81,974.30

Finding the Fourth Proportional to 149,956.51, 206,940.39 and 81,974.30

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Solution

The fourth proportional to 149,956.51, 206,940.39 and 81,974.30 is: 113,124.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,956.51 : 206,940.39 = 81,974.30 : x
  2. Step 2: Convert to fraction form
    149,956.51/206,940.39 = 81,974.30/x
  3. Step 3: Cross multiply
    149,956.51x = 206,940.39 × 81,974.30
  4. Step 4: Simplify right side
    149,956.51x = 16,963,792,167.40
  5. Step 5: Solve for x
    x = 16,963,792,167.40/149,956.51
  6. Step 6: Final answer
    x = 113,124.75

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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.