Home / 143,190.55-197,512.19-87,975.69

Finding the Fourth Proportional to 143,190.55, 197,512.19 and 87,975.69

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Solution

The fourth proportional to 143,190.55, 197,512.19 and 87,975.69 is: 121,350.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,190.55 : 197,512.19 = 87,975.69 : x
  2. Step 2: Convert to fraction form
    143,190.55/197,512.19 = 87,975.69/x
  3. Step 3: Cross multiply
    143,190.55x = 197,512.19 × 87,975.69
  4. Step 4: Simplify right side
    143,190.55x = 17,376,269,771.22
  5. Step 5: Solve for x
    x = 17,376,269,771.22/143,190.55
  6. Step 6: Final answer
    x = 121,350.67

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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.