Home / 158,391.83-218,571.54-86,759.38

Finding the Fourth Proportional to 158,391.83, 218,571.54 and 86,759.38

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Solution

The fourth proportional to 158,391.83, 218,571.54 and 86,759.38 is: 119,722.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,391.83 : 218,571.54 = 86,759.38 : x
  2. Step 2: Convert to fraction form
    158,391.83/218,571.54 = 86,759.38/x
  3. Step 3: Cross multiply
    158,391.83x = 218,571.54 × 86,759.38
  4. Step 4: Simplify right side
    158,391.83x = 18,963,131,296.05
  5. Step 5: Solve for x
    x = 18,963,131,296.05/158,391.83
  6. Step 6: Final answer
    x = 119,722.91

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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.