Home / 171,638.11-257,121.98-81,552.62

Finding the Fourth Proportional to 171,638.11, 257,121.98 and 81,552.62

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Solution

The fourth proportional to 171,638.11, 257,121.98 and 81,552.62 is: 122,169.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,638.11 : 257,121.98 = 81,552.62 : x
  2. Step 2: Convert to fraction form
    171,638.11/257,121.98 = 81,552.62/x
  3. Step 3: Cross multiply
    171,638.11x = 257,121.98 × 81,552.62
  4. Step 4: Simplify right side
    171,638.11x = 20,968,969,842.98
  5. Step 5: Solve for x
    x = 20,968,969,842.98/171,638.11
  6. Step 6: Final answer
    x = 122,169.67

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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.