Home / 137,940.88-190,380.60-128,936

Finding the Fourth Proportional to 137,940.88, 190,380.60 and 128,936

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Solution

The fourth proportional to 137,940.88, 190,380.60 and 128,936 is: 177,952.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,940.88 : 190,380.60 = 128,936 : x
  2. Step 2: Convert to fraction form
    137,940.88/190,380.60 = 128,936/x
  3. Step 3: Cross multiply
    137,940.88x = 190,380.60 × 128,936
  4. Step 4: Simplify right side
    137,940.88x = 24,546,913,041.60
  5. Step 5: Solve for x
    x = 24,546,913,041.60/137,940.88
  6. Step 6: Final answer
    x = 177,952.42

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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.