Finding the Fourth Proportional to 107,891.80, 161,837.70 and 61,235.80
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Solution
The fourth proportional to 107,891.80, 161,837.70 and 61,235.80 is: 91,853.70
Step by Step Solution
- Step 1: Write the proportion equation
107,891.80 : 161,837.70 = 61,235.80 : x - Step 2: Convert to fraction form
107,891.80/161,837.70 = 61,235.80/x - Step 3: Cross multiply
107,891.80x = 161,837.70 × 61,235.80 - Step 4: Simplify right side
107,891.80x = 9,910,261,029.66 - Step 5: Solve for x
x = 9,910,261,029.66/107,891.80 - Step 6: Final answer
x = 91,853.70
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1.5x scale
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.