Finding the Fourth Proportional to 117,378.67, 161,982.63 and 63,663.49
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Solution
The fourth proportional to 117,378.67, 161,982.63 and 63,663.49 is: 87,855.65
Step by Step Solution
- Step 1: Write the proportion equation
117,378.67 : 161,982.63 = 63,663.49 : x - Step 2: Convert to fraction form
117,378.67/161,982.63 = 63,663.49/x - Step 3: Cross multiply
117,378.67x = 161,982.63 × 63,663.49 - Step 4: Simplify right side
117,378.67x = 10,312,379,545.18 - Step 5: Solve for x
x = 10,312,379,545.18/117,378.67 - Step 6: Final answer
x = 87,855.65
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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.