Finding the Fourth Proportional to 100,006.96, 137,867.16 and 68,135.08
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Solution
The fourth proportional to 100,006.96, 137,867.16 and 68,135.08 is: 93,929.36
Step by Step Solution
- Step 1: Write the proportion equation
100,006.96 : 137,867.16 = 68,135.08 : x - Step 2: Convert to fraction form
100,006.96/137,867.16 = 68,135.08/x - Step 3: Cross multiply
100,006.96x = 137,867.16 × 68,135.08 - Step 4: Simplify right side
100,006.96x = 9,393,589,975.97 - Step 5: Solve for x
x = 9,393,589,975.97/100,006.96 - Step 6: Final answer
x = 93,929.36
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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.