Finding the Fourth Proportional to 137,599.97, 189,888.26 and 80,278.70
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Solution
The fourth proportional to 137,599.97, 189,888.26 and 80,278.70 is: 110,784.78
Step by Step Solution
- Step 1: Write the proportion equation
137,599.97 : 189,888.26 = 80,278.70 : x - Step 2: Convert to fraction form
137,599.97/189,888.26 = 80,278.70/x - Step 3: Cross multiply
137,599.97x = 189,888.26 × 80,278.70 - Step 4: Simplify right side
137,599.97x = 15,243,981,307.23 - Step 5: Solve for x
x = 15,243,981,307.23/137,599.97 - Step 6: Final answer
x = 110,784.78
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1.5x scale
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.