Home / 220,108.39-303,745.35-129,474.25

Finding the Fourth Proportional to 220,108.39, 303,745.35 and 129,474.25

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Solution

The fourth proportional to 220,108.39, 303,745.35 and 129,474.25 is: 178,671.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,108.39 : 303,745.35 = 129,474.25 : x
  2. Step 2: Convert to fraction form
    220,108.39/303,745.35 = 129,474.25/x
  3. Step 3: Cross multiply
    220,108.39x = 303,745.35 × 129,474.25
  4. Step 4: Simplify right side
    220,108.39x = 39,327,201,382.24
  5. Step 5: Solve for x
    x = 39,327,201,382.24/220,108.39
  6. Step 6: Final answer
    x = 178,671.98

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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.