Finding the Fourth Proportional to 121,622.80, 182,434.20 and 116,957.20
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Solution
The fourth proportional to 121,622.80, 182,434.20 and 116,957.20 is: 175,435.80
Step by Step Solution
- Step 1: Write the proportion equation
121,622.80 : 182,434.20 = 116,957.20 : x - Step 2: Convert to fraction form
121,622.80/182,434.20 = 116,957.20/x - Step 3: Cross multiply
121,622.80x = 182,434.20 × 116,957.20 - Step 4: Simplify right side
121,622.80x = 21,336,993,216.24 - Step 5: Solve for x
x = 21,336,993,216.24/121,622.80 - Step 6: Final answer
x = 175,435.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.