Home / 128,450.21-192,670.70-33,679.67

Finding the Fourth Proportional to 128,450.21, 192,670.70 and 33,679.67

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Solution

The fourth proportional to 128,450.21, 192,670.70 and 33,679.67 is: 50,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,450.21 : 192,670.70 = 33,679.67 : x
  2. Step 2: Convert to fraction form
    128,450.21/192,670.70 = 33,679.67/x
  3. Step 3: Cross multiply
    128,450.21x = 192,670.70 × 33,679.67
  4. Step 4: Simplify right side
    128,450.21x = 6,489,084,462.92
  5. Step 5: Solve for x
    x = 6,489,084,462.92/128,450.21
  6. Step 6: Final answer
    x = 50,518.29

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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.