Home / 223,795.82-308,828.58-121,821.42

Finding the Fourth Proportional to 223,795.82, 308,828.58 and 121,821.42

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Solution

The fourth proportional to 223,795.82, 308,828.58 and 121,821.42 is: 168,108.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,795.82 : 308,828.58 = 121,821.42 : x
  2. Step 2: Convert to fraction form
    223,795.82/308,828.58 = 121,821.42/x
  3. Step 3: Cross multiply
    223,795.82x = 308,828.58 × 121,821.42
  4. Step 4: Simplify right side
    223,795.82x = 37,621,936,152.18
  5. Step 5: Solve for x
    x = 37,621,936,152.18/223,795.82
  6. Step 6: Final answer
    x = 168,108.31

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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.