Finding the Fourth Proportional to 194,639.80, 291,959.70 and 120,911.80
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Solution
The fourth proportional to 194,639.80, 291,959.70 and 120,911.80 is: 181,367.70
Step by Step Solution
- Step 1: Write the proportion equation
194,639.80 : 291,959.70 = 120,911.80 : x - Step 2: Convert to fraction form
194,639.80/291,959.70 = 120,911.80/x - Step 3: Cross multiply
194,639.80x = 291,959.70 × 120,911.80 - Step 4: Simplify right side
194,639.80x = 35,301,372,854.46 - Step 5: Solve for x
x = 35,301,372,854.46/194,639.80 - Step 6: Final answer
x = 181,367.70
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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.