Finding the Fourth Proportional to 117,057.10, 161,539.77 and 68,687.95
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Solution
The fourth proportional to 117,057.10, 161,539.77 and 68,687.95 is: 94,789.94
Step by Step Solution
- Step 1: Write the proportion equation
117,057.10 : 161,539.77 = 68,687.95 : x - Step 2: Convert to fraction form
117,057.10/161,539.77 = 68,687.95/x - Step 3: Cross multiply
117,057.10x = 161,539.77 × 68,687.95 - Step 4: Simplify right side
117,057.10x = 11,095,835,644.77 - Step 5: Solve for x
x = 11,095,835,644.77/117,057.10 - Step 6: Final answer
x = 94,789.94
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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.