Home / 138,338.37-190,910.79-84,622.41

Finding the Fourth Proportional to 138,338.37, 190,910.79 and 84,622.41

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Solution

The fourth proportional to 138,338.37, 190,910.79 and 84,622.41 is: 116,781.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,338.37 : 190,910.79 = 84,622.41 : x
  2. Step 2: Convert to fraction form
    138,338.37/190,910.79 = 84,622.41/x
  3. Step 3: Cross multiply
    138,338.37x = 190,910.79 × 84,622.41
  4. Step 4: Simplify right side
    138,338.37x = 16,155,331,144.80
  5. Step 5: Solve for x
    x = 16,155,331,144.80/138,338.37
  6. Step 6: Final answer
    x = 116,781.27

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1.5x scale

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.