Home / 171,605.23-257,056.34-80,289.33

Finding the Fourth Proportional to 171,605.23, 257,056.34 and 80,289.33

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Solution

The fourth proportional to 171,605.23, 257,056.34 and 80,289.33 is: 120,269.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,605.23 : 257,056.34 = 80,289.33 : x
  2. Step 2: Convert to fraction form
    171,605.23/257,056.34 = 80,289.33/x
  3. Step 3: Cross multiply
    171,605.23x = 257,056.34 × 80,289.33
  4. Step 4: Simplify right side
    171,605.23x = 20,638,879,945.44
  5. Step 5: Solve for x
    x = 20,638,879,945.44/171,605.23
  6. Step 6: Final answer
    x = 120,269.53

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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.