Home / 138,738.45-208,107.78-33,557.52

Finding the Fourth Proportional to 138,738.45, 208,107.78 and 33,557.52

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Solution

The fourth proportional to 138,738.45, 208,107.78 and 33,557.52 is: 50,336.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,738.45 : 208,107.78 = 33,557.52 : x
  2. Step 2: Convert to fraction form
    138,738.45/208,107.78 = 33,557.52/x
  3. Step 3: Cross multiply
    138,738.45x = 208,107.78 × 33,557.52
  4. Step 4: Simplify right side
    138,738.45x = 6,983,580,989.51
  5. Step 5: Solve for x
    x = 6,983,580,989.51/138,738.45
  6. Step 6: Final answer
    x = 50,336.31

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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.