Finding the Fourth Proportional to 112,133.49, 154,743.07 and 61,146.09
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Solution
The fourth proportional to 112,133.49, 154,743.07 and 61,146.09 is: 84,380.98
Step by Step Solution
- Step 1: Write the proportion equation
112,133.49 : 154,743.07 = 61,146.09 : x - Step 2: Convert to fraction form
112,133.49/154,743.07 = 61,146.09/x - Step 3: Cross multiply
112,133.49x = 154,743.07 × 61,146.09 - Step 4: Simplify right side
112,133.49x = 9,461,933,685.10 - Step 5: Solve for x
x = 9,461,933,685.10/112,133.49 - Step 6: Final answer
x = 84,380.98
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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.