Finding the Fourth Proportional to 159,837.64, 220,583.14 and 91,876.68
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Solution
The fourth proportional to 159,837.64, 220,583.14 and 91,876.68 is: 126,793.96
Step by Step Solution
- Step 1: Write the proportion equation
159,837.64 : 220,583.14 = 91,876.68 : x - Step 2: Convert to fraction form
159,837.64/220,583.14 = 91,876.68/x - Step 3: Cross multiply
159,837.64x = 220,583.14 × 91,876.68 - Step 4: Simplify right side
159,837.64x = 20,266,446,567.18 - Step 5: Solve for x
x = 20,266,446,567.18/159,837.64 - Step 6: Final answer
x = 126,793.96
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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.