Home / 193,579.71-290,318.81-86,904

Finding the Fourth Proportional to 193,579.71, 290,318.81 and 86,904

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Solution

The fourth proportional to 193,579.71, 290,318.81 and 86,904 is: 130,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,579.71 : 290,318.81 = 86,904 : x
  2. Step 2: Convert to fraction form
    193,579.71/290,318.81 = 86,904/x
  3. Step 3: Cross multiply
    193,579.71x = 290,318.81 × 86,904
  4. Step 4: Simplify right side
    193,579.71x = 25,229,865,429.72
  5. Step 5: Solve for x
    x = 25,229,865,429.72/193,579.71
  6. Step 6: Final answer
    x = 130,333.21

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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.