Home / 100,213.54-138,296.77-54,893.43

Finding the Fourth Proportional to 100,213.54, 138,296.77 and 54,893.43

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Solution

The fourth proportional to 100,213.54, 138,296.77 and 54,893.43 is: 75,754.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,213.54 : 138,296.77 = 54,893.43 : x
  2. Step 2: Convert to fraction form
    100,213.54/138,296.77 = 54,893.43/x
  3. Step 3: Cross multiply
    100,213.54x = 138,296.77 × 54,893.43
  4. Step 4: Simplify right side
    100,213.54x = 7,591,583,925.99
  5. Step 5: Solve for x
    x = 7,591,583,925.99/100,213.54
  6. Step 6: Final answer
    x = 75,754.08

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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.