Home / 149,958.63-206,942.40-81,975.60

Finding the Fourth Proportional to 149,958.63, 206,942.40 and 81,975.60

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Solution

The fourth proportional to 149,958.63, 206,942.40 and 81,975.60 is: 113,126.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,958.63 : 206,942.40 = 81,975.60 : x
  2. Step 2: Convert to fraction form
    149,958.63/206,942.40 = 81,975.60/x
  3. Step 3: Cross multiply
    149,958.63x = 206,942.40 × 81,975.60
  4. Step 4: Simplify right side
    149,958.63x = 16,964,227,405.44
  5. Step 5: Solve for x
    x = 16,964,227,405.44/149,958.63
  6. Step 6: Final answer
    x = 113,126.05

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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.