Home / 187,979.33-281,796.31-81,296.56

Finding the Fourth Proportional to 187,979.33, 281,796.31 and 81,296.56

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Solution

The fourth proportional to 187,979.33, 281,796.31 and 81,296.56 is: 121,870.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,979.33 : 281,796.31 = 81,296.56 : x
  2. Step 2: Convert to fraction form
    187,979.33/281,796.31 = 81,296.56/x
  3. Step 3: Cross multiply
    187,979.33x = 281,796.31 × 81,296.56
  4. Step 4: Simplify right side
    187,979.33x = 22,909,068,808.23
  5. Step 5: Solve for x
    x = 22,909,068,808.23/187,979.33
  6. Step 6: Final answer
    x = 121,870.15

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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.