Home / 151,920.78-209,652.87-83,939.33

Finding the Fourth Proportional to 151,920.78, 209,652.87 and 83,939.33

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Solution

The fourth proportional to 151,920.78, 209,652.87 and 83,939.33 is: 115,837.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,920.78 : 209,652.87 = 83,939.33 : x
  2. Step 2: Convert to fraction form
    151,920.78/209,652.87 = 83,939.33/x
  3. Step 3: Cross multiply
    151,920.78x = 209,652.87 × 83,939.33
  4. Step 4: Simplify right side
    151,920.78x = 17,598,120,392.11
  5. Step 5: Solve for x
    x = 17,598,120,392.11/151,920.78
  6. Step 6: Final answer
    x = 115,837.48

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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.