Home / 100,035.14-138,043.31-54,704.30

Finding the Fourth Proportional to 100,035.14, 138,043.31 and 54,704.30

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Solution

The fourth proportional to 100,035.14, 138,043.31 and 54,704.30 is: 75,489.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,035.14 : 138,043.31 = 54,704.30 : x
  2. Step 2: Convert to fraction form
    100,035.14/138,043.31 = 54,704.30/x
  3. Step 3: Cross multiply
    100,035.14x = 138,043.31 × 54,704.30
  4. Step 4: Simplify right side
    100,035.14x = 7,551,561,679.49
  5. Step 5: Solve for x
    x = 7,551,561,679.49/100,035.14
  6. Step 6: Final answer
    x = 75,489.09

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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.