Home / 158,940.78-219,395.82-105,243.09

Finding the Fourth Proportional to 158,940.78, 219,395.82 and 105,243.09

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Solution

The fourth proportional to 158,940.78, 219,395.82 and 105,243.09 is: 145,273.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,940.78 : 219,395.82 = 105,243.09 : x
  2. Step 2: Convert to fraction form
    158,940.78/219,395.82 = 105,243.09/x
  3. Step 3: Cross multiply
    158,940.78x = 219,395.82 × 105,243.09
  4. Step 4: Simplify right side
    158,940.78x = 23,089,894,029.88
  5. Step 5: Solve for x
    x = 23,089,894,029.88/158,940.78
  6. Step 6: Final answer
    x = 145,273.57

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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.