Home / 123,190.36-170,002.58-66,601.72

Finding the Fourth Proportional to 123,190.36, 170,002.58 and 66,601.72

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Solution

The fourth proportional to 123,190.36, 170,002.58 and 66,601.72 is: 91,910.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,190.36 : 170,002.58 = 66,601.72 : x
  2. Step 2: Convert to fraction form
    123,190.36/170,002.58 = 66,601.72/x
  3. Step 3: Cross multiply
    123,190.36x = 170,002.58 × 66,601.72
  4. Step 4: Simplify right side
    123,190.36x = 11,322,464,232.44
  5. Step 5: Solve for x
    x = 11,322,464,232.44/123,190.36
  6. Step 6: Final answer
    x = 91,910.31

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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.