Home / 203,357.49-304,977.90-78,669.33

Finding the Fourth Proportional to 203,357.49, 304,977.90 and 78,669.33

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Solution

The fourth proportional to 203,357.49, 304,977.90 and 78,669.33 is: 117,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,357.49 : 304,977.90 = 78,669.33 : x
  2. Step 2: Convert to fraction form
    203,357.49/304,977.90 = 78,669.33/x
  3. Step 3: Cross multiply
    203,357.49x = 304,977.90 × 78,669.33
  4. Step 4: Simplify right side
    203,357.49x = 23,992,407,057.81
  5. Step 5: Solve for x
    x = 23,992,407,057.81/203,357.49
  6. Step 6: Final answer
    x = 117,981.43

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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.