Finding the Fourth Proportional to 149,376.24, 206,136.56 and 81,393.68
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Solution
The fourth proportional to 149,376.24, 206,136.56 and 81,393.68 is: 112,321.84
Step by Step Solution
- Step 1: Write the proportion equation
149,376.24 : 206,136.56 = 81,393.68 : x - Step 2: Convert to fraction form
149,376.24/206,136.56 = 81,393.68/x - Step 3: Cross multiply
149,376.24x = 206,136.56 × 81,393.68 - Step 4: Simplify right side
149,376.24x = 16,778,213,919.77 - Step 5: Solve for x
x = 16,778,213,919.77/149,376.24 - Step 6: Final answer
x = 112,321.84
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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.