Finding the Fourth Proportional to 157,231.40, 235,847.10 and 133,611.80
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Solution
The fourth proportional to 157,231.40, 235,847.10 and 133,611.80 is: 200,417.70
Step by Step Solution
- Step 1: Write the proportion equation
157,231.40 : 235,847.10 = 133,611.80 : x - Step 2: Convert to fraction form
157,231.40/235,847.10 = 133,611.80/x - Step 3: Cross multiply
157,231.40x = 235,847.10 × 133,611.80 - Step 4: Simplify right side
157,231.40x = 31,511,955,555.78 - Step 5: Solve for x
x = 31,511,955,555.78/157,231.40 - Step 6: Final answer
x = 200,417.70
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1.5x scale
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.