Home / 137,805.54-190,192.44-84,121.80

Finding the Fourth Proportional to 137,805.54, 190,192.44 and 84,121.80

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Solution

The fourth proportional to 137,805.54, 190,192.44 and 84,121.80 is: 116,100.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,805.54 : 190,192.44 = 84,121.80 : x
  2. Step 2: Convert to fraction form
    137,805.54/190,192.44 = 84,121.80/x
  3. Step 3: Cross multiply
    137,805.54x = 190,192.44 × 84,121.80
  4. Step 4: Simplify right side
    137,805.54x = 15,999,330,399.19
  5. Step 5: Solve for x
    x = 15,999,330,399.19/137,805.54
  6. Step 6: Final answer
    x = 116,100.78

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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.