Finding the Fourth Proportional to 128,930.22, 193,208.40 and 91,563.48
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Solution
The fourth proportional to 128,930.22, 193,208.40 and 91,563.48 is: 137,212.47
Step by Step Solution
- Step 1: Write the proportion equation
128,930.22 : 193,208.40 = 91,563.48 : x - Step 2: Convert to fraction form
128,930.22/193,208.40 = 91,563.48/x - Step 3: Cross multiply
128,930.22x = 193,208.40 × 91,563.48 - Step 4: Simplify right side
128,930.22x = 17,690,833,469.23 - Step 5: Solve for x
x = 17,690,833,469.23/128,930.22 - Step 6: Final answer
x = 137,212.47
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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.