Home / 83,643.88-115,269.24-82,106.64

Finding the Fourth Proportional to 83,643.88, 115,269.24 and 82,106.64

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Solution

The fourth proportional to 83,643.88, 115,269.24 and 82,106.64 is: 113,150.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,643.88 : 115,269.24 = 82,106.64 : x
  2. Step 2: Convert to fraction form
    83,643.88/115,269.24 = 82,106.64/x
  3. Step 3: Cross multiply
    83,643.88x = 115,269.24 × 82,106.64
  4. Step 4: Simplify right side
    83,643.88x = 9,464,369,991.75
  5. Step 5: Solve for x
    x = 9,464,369,991.75/83,643.88
  6. Step 6: Final answer
    x = 113,150.78

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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.