Finding the Fourth Proportional to 137,919.70, 206,879.55 and 102,927.70
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Solution
The fourth proportional to 137,919.70, 206,879.55 and 102,927.70 is: 154,391.55
Step by Step Solution
- Step 1: Write the proportion equation
137,919.70 : 206,879.55 = 102,927.70 : x - Step 2: Convert to fraction form
137,919.70/206,879.55 = 102,927.70/x - Step 3: Cross multiply
137,919.70x = 206,879.55 × 102,927.70 - Step 4: Simplify right side
137,919.70x = 21,293,636,258.54 - Step 5: Solve for x
x = 21,293,636,258.54/137,919.70 - Step 6: Final answer
x = 154,391.55
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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.