Home / 220,185.36-303,856.38-129,544.74

Finding the Fourth Proportional to 220,185.36, 303,856.38 and 129,544.74

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Solution

The fourth proportional to 220,185.36, 303,856.38 and 129,544.74 is: 178,772.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,185.36 : 303,856.38 = 129,544.74 : x
  2. Step 2: Convert to fraction form
    220,185.36/303,856.38 = 129,544.74/x
  3. Step 3: Cross multiply
    220,185.36x = 303,856.38 × 129,544.74
  4. Step 4: Simplify right side
    220,185.36x = 39,362,995,744.44
  5. Step 5: Solve for x
    x = 39,362,995,744.44/220,185.36
  6. Step 6: Final answer
    x = 178,772.08

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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.