Finding the Fourth Proportional to 131,611.21, 181,645.81 and 74,266.79
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Solution
The fourth proportional to 131,611.21, 181,645.81 and 74,266.79 is: 102,500.77
Step by Step Solution
- Step 1: Write the proportion equation
131,611.21 : 181,645.81 = 74,266.79 : x - Step 2: Convert to fraction form
131,611.21/181,645.81 = 74,266.79/x - Step 3: Cross multiply
131,611.21x = 181,645.81 × 74,266.79 - Step 4: Simplify right side
131,611.21x = 13,490,250,131.75 - Step 5: Solve for x
x = 13,490,250,131.75/131,611.21 - Step 6: Final answer
x = 102,500.77
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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.