Finding the Fourth Proportional to 121,138.92, 180,465.24 and 115,674.01
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Solution
The fourth proportional to 121,138.92, 180,465.24 and 115,674.01 is: 172,323.96
Step by Step Solution
- Step 1: Write the proportion equation
121,138.92 : 180,465.24 = 115,674.01 : x - Step 2: Convert to fraction form
121,138.92/180,465.24 = 115,674.01/x - Step 3: Cross multiply
121,138.92x = 180,465.24 × 115,674.01 - Step 4: Simplify right side
121,138.92x = 20,875,137,959.03 - Step 5: Solve for x
x = 20,875,137,959.03/121,138.92 - Step 6: Final answer
x = 172,323.96
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.