Home / 105,039.44-145,025.41-80,797.36

Finding the Fourth Proportional to 105,039.44, 145,025.41 and 80,797.36

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Solution

The fourth proportional to 105,039.44, 145,025.41 and 80,797.36 is: 111,554.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,039.44 : 145,025.41 = 80,797.36 : x
  2. Step 2: Convert to fraction form
    105,039.44/145,025.41 = 80,797.36/x
  3. Step 3: Cross multiply
    105,039.44x = 145,025.41 × 80,797.36
  4. Step 4: Simplify right side
    105,039.44x = 11,717,669,535.79
  5. Step 5: Solve for x
    x = 11,717,669,535.79/105,039.44
  6. Step 6: Final answer
    x = 111,554.95

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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.