Finding the Fourth Proportional to 140,469.39, 193,793.58 and 86,661.09
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Solution
The fourth proportional to 140,469.39, 193,793.58 and 86,661.09 is: 119,558.88
Step by Step Solution
- Step 1: Write the proportion equation
140,469.39 : 193,793.58 = 86,661.09 : x - Step 2: Convert to fraction form
140,469.39/193,793.58 = 86,661.09/x - Step 3: Cross multiply
140,469.39x = 193,793.58 × 86,661.09 - Step 4: Simplify right side
140,469.39x = 16,794,362,877.80 - Step 5: Solve for x
x = 16,794,362,877.80/140,469.39 - Step 6: Final answer
x = 119,558.88
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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.