Home / 145,015.75-200,118.72-80,481.24

Finding the Fourth Proportional to 145,015.75, 200,118.72 and 80,481.24

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Solution

The fourth proportional to 145,015.75, 200,118.72 and 80,481.24 is: 111,062.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,015.75 : 200,118.72 = 80,481.24 : x
  2. Step 2: Convert to fraction form
    145,015.75/200,118.72 = 80,481.24/x
  3. Step 3: Cross multiply
    145,015.75x = 200,118.72 × 80,481.24
  4. Step 4: Simplify right side
    145,015.75x = 16,105,801,555.49
  5. Step 5: Solve for x
    x = 16,105,801,555.49/145,015.75
  6. Step 6: Final answer
    x = 111,062.43

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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.