Finding the Fourth Proportional to 127,918.99, 191,629.14 and 77,874.97
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Solution
The fourth proportional to 127,918.99, 191,629.14 and 77,874.97 is: 116,660.66
Step by Step Solution
- Step 1: Write the proportion equation
127,918.99 : 191,629.14 = 77,874.97 : x - Step 2: Convert to fraction form
127,918.99/191,629.14 = 77,874.97/x - Step 3: Cross multiply
127,918.99x = 191,629.14 × 77,874.97 - Step 4: Simplify right side
127,918.99x = 14,923,113,528.63 - Step 5: Solve for x
x = 14,923,113,528.63/127,918.99 - Step 6: Final answer
x = 116,660.66
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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.