Finding the Fourth Proportional to 128,045.70, 192,062.88 and 43,813.26
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Solution
The fourth proportional to 128,045.70, 192,062.88 and 43,813.26 is: 65,717.95
Step by Step Solution
- Step 1: Write the proportion equation
128,045.70 : 192,062.88 = 43,813.26 : x - Step 2: Convert to fraction form
128,045.70/192,062.88 = 43,813.26/x - Step 3: Cross multiply
128,045.70x = 192,062.88 × 43,813.26 - Step 4: Simplify right side
128,045.70x = 8,414,900,897.79 - Step 5: Solve for x
x = 8,414,900,897.79/128,045.70 - Step 6: Final answer
x = 65,717.95
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1.5x scale
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.