Finding the Fourth Proportional to 117,805.75, 162,571.94 and 64,813.75
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Solution
The fourth proportional to 117,805.75, 162,571.94 and 64,813.75 is: 89,442.98
Step by Step Solution
- Step 1: Write the proportion equation
117,805.75 : 162,571.94 = 64,813.75 : x - Step 2: Convert to fraction form
117,805.75/162,571.94 = 64,813.75/x - Step 3: Cross multiply
117,805.75x = 162,571.94 × 64,813.75 - Step 4: Simplify right side
117,805.75x = 10,536,897,076.18 - Step 5: Solve for x
x = 10,536,897,076.18/117,805.75 - Step 6: Final answer
x = 89,442.98
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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.