Home / 100,989.12-151,067.31-83,017.38

Finding the Fourth Proportional to 100,989.12, 151,067.31 and 83,017.38

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Solution

The fourth proportional to 100,989.12, 151,067.31 and 83,017.38 is: 124,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,989.12 : 151,067.31 = 83,017.38 : x
  2. Step 2: Convert to fraction form
    100,989.12/151,067.31 = 83,017.38/x
  3. Step 3: Cross multiply
    100,989.12x = 151,067.31 × 83,017.38
  4. Step 4: Simplify right side
    100,989.12x = 12,541,212,279.85
  5. Step 5: Solve for x
    x = 12,541,212,279.85/100,989.12
  6. Step 6: Final answer
    x = 124,183.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.