Home / 189,365.45-261,419.01-117,768.54

Finding the Fourth Proportional to 189,365.45, 261,419.01 and 117,768.54

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Solution

The fourth proportional to 189,365.45, 261,419.01 and 117,768.54 is: 162,579.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,365.45 : 261,419.01 = 117,768.54 : x
  2. Step 2: Convert to fraction form
    189,365.45/261,419.01 = 117,768.54/x
  3. Step 3: Cross multiply
    189,365.45x = 261,419.01 × 117,768.54
  4. Step 4: Simplify right side
    189,365.45x = 30,786,935,135.95
  5. Step 5: Solve for x
    x = 30,786,935,135.95/189,365.45
  6. Step 6: Final answer
    x = 162,579.48

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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.