Home / 193,890.51-290,678.90-87,196.33

Finding the Fourth Proportional to 193,890.51, 290,678.90 and 87,196.33

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Solution

The fourth proportional to 193,890.51, 290,678.90 and 87,196.33 is: 130,723.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,890.51 : 290,678.90 = 87,196.33 : x
  2. Step 2: Convert to fraction form
    193,890.51/290,678.90 = 87,196.33/x
  3. Step 3: Cross multiply
    193,890.51x = 290,678.90 × 87,196.33
  4. Step 4: Simplify right side
    193,890.51x = 25,346,133,215.80
  5. Step 5: Solve for x
    x = 25,346,133,215.80/193,890.51
  6. Step 6: Final answer
    x = 130,723.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.