Home / 217,619.73-300,344.56-122,131.67

Finding the Fourth Proportional to 217,619.73, 300,344.56 and 122,131.67

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Solution

The fourth proportional to 217,619.73, 300,344.56 and 122,131.67 is: 168,558.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,619.73 : 300,344.56 = 122,131.67 : x
  2. Step 2: Convert to fraction form
    217,619.73/300,344.56 = 122,131.67/x
  3. Step 3: Cross multiply
    217,619.73x = 300,344.56 × 122,131.67
  4. Step 4: Simplify right side
    217,619.73x = 36,681,580,881.16
  5. Step 5: Solve for x
    x = 36,681,580,881.16/217,619.73
  6. Step 6: Final answer
    x = 168,558.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.