Finding the Fourth Proportional to 189,172.68, 260,910.62 and 121,195.95
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Solution
The fourth proportional to 189,172.68, 260,910.62 and 121,195.95 is: 167,155.79
Step by Step Solution
- Step 1: Write the proportion equation
189,172.68 : 260,910.62 = 121,195.95 : x - Step 2: Convert to fraction form
189,172.68/260,910.62 = 121,195.95/x - Step 3: Cross multiply
189,172.68x = 260,910.62 × 121,195.95 - Step 4: Simplify right side
189,172.68x = 31,621,309,326.08 - Step 5: Solve for x
x = 31,621,309,326.08/189,172.68 - Step 6: Final answer
x = 167,155.79
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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.