Finding the Fourth Proportional to 139,559.68, 192,647.09 and 98,936.13
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Solution
The fourth proportional to 139,559.68, 192,647.09 and 98,936.13 is: 136,570.66
Step by Step Solution
- Step 1: Write the proportion equation
139,559.68 : 192,647.09 = 98,936.13 : x - Step 2: Convert to fraction form
139,559.68/192,647.09 = 98,936.13/x - Step 3: Cross multiply
139,559.68x = 192,647.09 × 98,936.13 - Step 4: Simplify right side
139,559.68x = 19,059,757,540.36 - Step 5: Solve for x
x = 19,059,757,540.36/139,559.68 - Step 6: Final answer
x = 136,570.66
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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.