Finding the Fourth Proportional to 133,231.80, 199,847.70 and 80,743.80
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Solution
The fourth proportional to 133,231.80, 199,847.70 and 80,743.80 is: 121,115.70
Step by Step Solution
- Step 1: Write the proportion equation
133,231.80 : 199,847.70 = 80,743.80 : x - Step 2: Convert to fraction form
133,231.80/199,847.70 = 80,743.80/x - Step 3: Cross multiply
133,231.80x = 199,847.70 × 80,743.80 - Step 4: Simplify right side
133,231.80x = 16,136,462,719.26 - Step 5: Solve for x
x = 16,136,462,719.26/133,231.80 - Step 6: Final answer
x = 121,115.70
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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.