Home / 107,843.82-148,782.02-72,057.20

Finding the Fourth Proportional to 107,843.82, 148,782.02 and 72,057.20

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Solution

The fourth proportional to 107,843.82, 148,782.02 and 72,057.20 is: 99,410.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,843.82 : 148,782.02 = 72,057.20 : x
  2. Step 2: Convert to fraction form
    107,843.82/148,782.02 = 72,057.20/x
  3. Step 3: Cross multiply
    107,843.82x = 148,782.02 × 72,057.20
  4. Step 4: Simplify right side
    107,843.82x = 10,720,815,771.54
  5. Step 5: Solve for x
    x = 10,720,815,771.54/107,843.82
  6. Step 6: Final answer
    x = 99,410.57

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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.