Finding the Fourth Proportional to 136,918.36, 205,383.20 and 47,022.84
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Solution
The fourth proportional to 136,918.36, 205,383.20 and 47,022.84 is: 70,536.20
Step by Step Solution
- Step 1: Write the proportion equation
136,918.36 : 205,383.20 = 47,022.84 : x - Step 2: Convert to fraction form
136,918.36/205,383.20 = 47,022.84/x - Step 3: Cross multiply
136,918.36x = 205,383.20 × 47,022.84 - Step 4: Simplify right side
136,918.36x = 9,657,701,352.29 - Step 5: Solve for x
x = 9,657,701,352.29/136,918.36 - Step 6: Final answer
x = 70,536.20
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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.