Home / 147,639.25-203,742.17-80,571.25

Finding the Fourth Proportional to 147,639.25, 203,742.17 and 80,571.25

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Solution

The fourth proportional to 147,639.25, 203,742.17 and 80,571.25 is: 111,188.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,639.25 : 203,742.17 = 80,571.25 : x
  2. Step 2: Convert to fraction form
    147,639.25/203,742.17 = 80,571.25/x
  3. Step 3: Cross multiply
    147,639.25x = 203,742.17 × 80,571.25
  4. Step 4: Simplify right side
    147,639.25x = 16,415,760,911.76
  5. Step 5: Solve for x
    x = 16,415,760,911.76/147,639.25
  6. Step 6: Final answer
    x = 111,188.33

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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.