Finding the Fourth Proportional to 133,213.64, 183,832.68 and 72,782.99
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Solution
The fourth proportional to 133,213.64, 183,832.68 and 72,782.99 is: 100,439.36
Step by Step Solution
- Step 1: Write the proportion equation
133,213.64 : 183,832.68 = 72,782.99 : x - Step 2: Convert to fraction form
133,213.64/183,832.68 = 72,782.99/x - Step 3: Cross multiply
133,213.64x = 183,832.68 × 72,782.99 - Step 4: Simplify right side
133,213.64x = 13,379,892,110.11 - Step 5: Solve for x
x = 13,379,892,110.11/133,213.64 - Step 6: Final answer
x = 100,439.36
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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.