Home / 151,091.75-208,511.21-83,105.21

Finding the Fourth Proportional to 151,091.75, 208,511.21 and 83,105.21

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Solution

The fourth proportional to 151,091.75, 208,511.21 and 83,105.21 is: 114,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,091.75 : 208,511.21 = 83,105.21 : x
  2. Step 2: Convert to fraction form
    151,091.75/208,511.21 = 83,105.21/x
  3. Step 3: Cross multiply
    151,091.75x = 208,511.21 × 83,105.21
  4. Step 4: Simplify right side
    151,091.75x = 17,328,367,478.88
  5. Step 5: Solve for x
    x = 17,328,367,478.88/151,091.75
  6. Step 6: Final answer
    x = 114,687.71

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1.5x scale

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.