Home / 123,190.29-170,001.86-66,601.53

Finding the Fourth Proportional to 123,190.29, 170,001.86 and 66,601.53

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Solution

The fourth proportional to 123,190.29, 170,001.86 and 66,601.53 is: 91,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,190.29 : 170,001.86 = 66,601.53 : x
  2. Step 2: Convert to fraction form
    123,190.29/170,001.86 = 66,601.53/x
  3. Step 3: Cross multiply
    123,190.29x = 170,001.86 × 66,601.53
  4. Step 4: Simplify right side
    123,190.29x = 11,322,383,645.84
  5. Step 5: Solve for x
    x = 11,322,383,645.84/123,190.29
  6. Step 6: Final answer
    x = 91,909.71

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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.