Home / 100,579.44-138,799.65-55,260.33

Finding the Fourth Proportional to 100,579.44, 138,799.65 and 55,260.33

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Solution

The fourth proportional to 100,579.44, 138,799.65 and 55,260.33 is: 76,259.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,579.44 : 138,799.65 = 55,260.33 : x
  2. Step 2: Convert to fraction form
    100,579.44/138,799.65 = 55,260.33/x
  3. Step 3: Cross multiply
    100,579.44x = 138,799.65 × 55,260.33
  4. Step 4: Simplify right side
    100,579.44x = 7,670,114,462.88
  5. Step 5: Solve for x
    x = 7,670,114,462.88/100,579.44
  6. Step 6: Final answer
    x = 76,259.27

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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.