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Finding the Fourth Proportional to 104,816.72, 144,371.58 and 80,571.32

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Solution

The fourth proportional to 104,816.72, 144,371.58 and 80,571.32 is: 110,976.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,816.72 : 144,371.58 = 80,571.32 : x
  2. Step 2: Convert to fraction form
    104,816.72/144,371.58 = 80,571.32/x
  3. Step 3: Cross multiply
    104,816.72x = 144,371.58 × 80,571.32
  4. Step 4: Simplify right side
    104,816.72x = 11,632,208,771.09
  5. Step 5: Solve for x
    x = 11,632,208,771.09/104,816.72
  6. Step 6: Final answer
    x = 110,976.65

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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.