Finding the Fourth Proportional to 131,837.11, 181,946.39 and 74,486.96
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Solution
The fourth proportional to 131,837.11, 181,946.39 and 74,486.96 is: 102,798.32
Step by Step Solution
- Step 1: Write the proportion equation
131,837.11 : 181,946.39 = 74,486.96 : x - Step 2: Convert to fraction form
131,837.11/181,946.39 = 74,486.96/x - Step 3: Cross multiply
131,837.11x = 181,946.39 × 74,486.96 - Step 4: Simplify right side
131,837.11x = 13,552,633,474.07 - Step 5: Solve for x
x = 13,552,633,474.07/131,837.11 - Step 6: Final answer
x = 102,798.32
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1.5x scale
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.