Home / 100,259.44-138,357.94-54,940.36

Finding the Fourth Proportional to 100,259.44, 138,357.94 and 54,940.36

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Solution

The fourth proportional to 100,259.44, 138,357.94 and 54,940.36 is: 75,817.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,259.44 : 138,357.94 = 54,940.36 : x
  2. Step 2: Convert to fraction form
    100,259.44/138,357.94 = 54,940.36/x
  3. Step 3: Cross multiply
    100,259.44x = 138,357.94 × 54,940.36
  4. Step 4: Simplify right side
    100,259.44x = 7,601,435,032.46
  5. Step 5: Solve for x
    x = 7,601,435,032.46/100,259.44
  6. Step 6: Final answer
    x = 75,817.65

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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.