Finding the Fourth Proportional to 140,750.31, 194,236.80 and 84,161.69
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Solution
The fourth proportional to 140,750.31, 194,236.80 and 84,161.69 is: 116,143.95
Step by Step Solution
- Step 1: Write the proportion equation
140,750.31 : 194,236.80 = 84,161.69 : x - Step 2: Convert to fraction form
140,750.31/194,236.80 = 84,161.69/x - Step 3: Cross multiply
140,750.31x = 194,236.80 × 84,161.69 - Step 4: Simplify right side
140,750.31x = 16,347,296,862.60 - Step 5: Solve for x
x = 16,347,296,862.60/140,750.31 - Step 6: Final answer
x = 116,143.95
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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.