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Finding the Fourth Proportional to 223,788.56, 308,836.36 and 121,809.08

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Solution

The fourth proportional to 223,788.56, 308,836.36 and 121,809.08 is: 168,100.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,788.56 : 308,836.36 = 121,809.08 : x
  2. Step 2: Convert to fraction form
    223,788.56/308,836.36 = 121,809.08/x
  3. Step 3: Cross multiply
    223,788.56x = 308,836.36 × 121,809.08
  4. Step 4: Simplify right side
    223,788.56x = 37,619,072,882.15
  5. Step 5: Solve for x
    x = 37,619,072,882.15/223,788.56
  6. Step 6: Final answer
    x = 168,100.96

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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.