Finding the Fourth Proportional to 141,539.69, 195,330.14 and 81,121.99
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Solution
The fourth proportional to 141,539.69, 195,330.14 and 81,121.99 is: 111,951.43
Step by Step Solution
- Step 1: Write the proportion equation
141,539.69 : 195,330.14 = 81,121.99 : x - Step 2: Convert to fraction form
141,539.69/195,330.14 = 81,121.99/x - Step 3: Cross multiply
141,539.69x = 195,330.14 × 81,121.99 - Step 4: Simplify right side
141,539.69x = 15,845,569,896.61 - Step 5: Solve for x
x = 15,845,569,896.61/141,539.69 - Step 6: Final answer
x = 111,951.43
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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.