Home / 100,268.75-138,348.44-57,234.51

Finding the Fourth Proportional to 100,268.75, 138,348.44 and 57,234.51

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Solution

The fourth proportional to 100,268.75, 138,348.44 and 57,234.51 is: 78,970.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,268.75 : 138,348.44 = 57,234.51 : x
  2. Step 2: Convert to fraction form
    100,268.75/138,348.44 = 57,234.51/x
  3. Step 3: Cross multiply
    100,268.75x = 138,348.44 × 57,234.51
  4. Step 4: Simplify right side
    100,268.75x = 7,918,305,101.12
  5. Step 5: Solve for x
    x = 7,918,305,101.12/100,268.75
  6. Step 6: Final answer
    x = 78,970.81

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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.