Home / 189,533.53-261,556.11-108,976.80

Finding the Fourth Proportional to 189,533.53, 261,556.11 and 108,976.80

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Solution

The fourth proportional to 189,533.53, 261,556.11 and 108,976.80 is: 150,387.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,533.53 : 261,556.11 = 108,976.80 : x
  2. Step 2: Convert to fraction form
    189,533.53/261,556.11 = 108,976.80/x
  3. Step 3: Cross multiply
    189,533.53x = 261,556.11 × 108,976.80
  4. Step 4: Simplify right side
    189,533.53x = 28,503,547,888.25
  5. Step 5: Solve for x
    x = 28,503,547,888.25/189,533.53
  6. Step 6: Final answer
    x = 150,387.89

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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.