Home / 198,240.12-273,656.61-121,771.67

Finding the Fourth Proportional to 198,240.12, 273,656.61 and 121,771.67

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Solution

The fourth proportional to 198,240.12, 273,656.61 and 121,771.67 is: 168,097.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,240.12 : 273,656.61 = 121,771.67 : x
  2. Step 2: Convert to fraction form
    198,240.12/273,656.61 = 121,771.67/x
  3. Step 3: Cross multiply
    198,240.12x = 273,656.61 × 121,771.67
  4. Step 4: Simplify right side
    198,240.12x = 33,323,621,037.96
  5. Step 5: Solve for x
    x = 33,323,621,037.96/198,240.12
  6. Step 6: Final answer
    x = 168,097.26

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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.