Finding the Fourth Proportional to 138,236.70, 207,355.06 and 68,252.70
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Solution
The fourth proportional to 138,236.70, 207,355.06 and 68,252.70 is: 102,379.05
Step by Step Solution
- Step 1: Write the proportion equation
138,236.70 : 207,355.06 = 68,252.70 : x - Step 2: Convert to fraction form
138,236.70/207,355.06 = 68,252.70/x - Step 3: Cross multiply
138,236.70x = 207,355.06 × 68,252.70 - Step 4: Simplify right side
138,236.70x = 14,152,542,703.66 - Step 5: Solve for x
x = 14,152,542,703.66/138,236.70 - Step 6: Final answer
x = 102,379.05
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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.