Finding the Fourth Proportional to 197,471.19, 272,511.60 and 120,990.45
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Solution
The fourth proportional to 197,471.19, 272,511.60 and 120,990.45 is: 166,967.65
Step by Step Solution
- Step 1: Write the proportion equation
197,471.19 : 272,511.60 = 120,990.45 : x - Step 2: Convert to fraction form
197,471.19/272,511.60 = 120,990.45/x - Step 3: Cross multiply
197,471.19x = 272,511.60 × 120,990.45 - Step 4: Simplify right side
197,471.19x = 32,971,301,114.22 - Step 5: Solve for x
x = 32,971,301,114.22/197,471.19 - Step 6: Final answer
x = 166,967.65
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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.