Home / 189,365.57-261,419.18-117,768.66

Finding the Fourth Proportional to 189,365.57, 261,419.18 and 117,768.66

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Solution

The fourth proportional to 189,365.57, 261,419.18 and 117,768.66 is: 162,579.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,365.57 : 261,419.18 = 117,768.66 : x
  2. Step 2: Convert to fraction form
    189,365.57/261,419.18 = 117,768.66/x
  3. Step 3: Cross multiply
    189,365.57x = 261,419.18 × 117,768.66
  4. Step 4: Simplify right side
    189,365.57x = 30,786,986,526.90
  5. Step 5: Solve for x
    x = 30,786,986,526.90/189,365.57
  6. Step 6: Final answer
    x = 162,579.64

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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.