Home / 109,391.85-164,087.78-91,895.85

Finding the Fourth Proportional to 109,391.85, 164,087.78 and 91,895.85

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Solution

The fourth proportional to 109,391.85, 164,087.78 and 91,895.85 is: 137,843.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,391.85 : 164,087.78 = 91,895.85 : x
  2. Step 2: Convert to fraction form
    109,391.85/164,087.78 = 91,895.85/x
  3. Step 3: Cross multiply
    109,391.85x = 164,087.78 × 91,895.85
  4. Step 4: Simplify right side
    109,391.85x = 15,078,985,558.23
  5. Step 5: Solve for x
    x = 15,078,985,558.23/109,391.85
  6. Step 6: Final answer
    x = 137,843.78

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1.5x scale

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.