Home / 100,029.03-138,043.62-54,704.31

Finding the Fourth Proportional to 100,029.03, 138,043.62 and 54,704.31

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Solution

The fourth proportional to 100,029.03, 138,043.62 and 54,704.31 is: 75,493.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,029.03 : 138,043.62 = 54,704.31 : x
  2. Step 2: Convert to fraction form
    100,029.03/138,043.62 = 54,704.31/x
  3. Step 3: Cross multiply
    100,029.03x = 138,043.62 × 54,704.31
  4. Step 4: Simplify right side
    100,029.03x = 7,551,580,982.00
  5. Step 5: Solve for x
    x = 7,551,580,982.00/100,029.03
  6. Step 6: Final answer
    x = 75,493.89

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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.