Home / 126,540.15-189,745.74-42,270.03

Finding the Fourth Proportional to 126,540.15, 189,745.74 and 42,270.03

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Solution

The fourth proportional to 126,540.15, 189,745.74 and 42,270.03 is: 63,383.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,540.15 : 189,745.74 = 42,270.03 : x
  2. Step 2: Convert to fraction form
    126,540.15/189,745.74 = 42,270.03/x
  3. Step 3: Cross multiply
    126,540.15x = 189,745.74 × 42,270.03
  4. Step 4: Simplify right side
    126,540.15x = 8,020,558,122.17
  5. Step 5: Solve for x
    x = 8,020,558,122.17/126,540.15
  6. Step 6: Final answer
    x = 63,383.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.