Home / 91,021.87-125,664.07-80,922.42

Finding the Fourth Proportional to 91,021.87, 125,664.07 and 80,922.42

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Solution

The fourth proportional to 91,021.87, 125,664.07 and 80,922.42 is: 111,720.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,021.87 : 125,664.07 = 80,922.42 : x
  2. Step 2: Convert to fraction form
    91,021.87/125,664.07 = 80,922.42/x
  3. Step 3: Cross multiply
    91,021.87x = 125,664.07 × 80,922.42
  4. Step 4: Simplify right side
    91,021.87x = 10,169,040,337.29
  5. Step 5: Solve for x
    x = 10,169,040,337.29/91,021.87
  6. Step 6: Final answer
    x = 111,720.84

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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.