Home / 216,399.36-324,158-103,736.06

Finding the Fourth Proportional to 216,399.36, 324,158 and 103,736.06

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Solution

The fourth proportional to 216,399.36, 324,158 and 103,736.06 is: 155,392.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,399.36 : 324,158 = 103,736.06 : x
  2. Step 2: Convert to fraction form
    216,399.36/324,158 = 103,736.06/x
  3. Step 3: Cross multiply
    216,399.36x = 324,158 × 103,736.06
  4. Step 4: Simplify right side
    216,399.36x = 33,626,873,737.48
  5. Step 5: Solve for x
    x = 33,626,873,737.48/216,399.36
  6. Step 6: Final answer
    x = 155,392.67

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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.