Home / 171,438.21-257,198.36-71,542.83

Finding the Fourth Proportional to 171,438.21, 257,198.36 and 71,542.83

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Solution

The fourth proportional to 171,438.21, 257,198.36 and 71,542.83 is: 107,331.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,438.21 : 257,198.36 = 71,542.83 : x
  2. Step 2: Convert to fraction form
    171,438.21/257,198.36 = 71,542.83/x
  3. Step 3: Cross multiply
    171,438.21x = 257,198.36 × 71,542.83
  4. Step 4: Simplify right side
    171,438.21x = 18,400,698,188.04
  5. Step 5: Solve for x
    x = 18,400,698,188.04/171,438.21
  6. Step 6: Final answer
    x = 107,331.37

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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.