Finding the Fourth Proportional to 138,504.96, 191,136.83 and 74,842.75
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Solution
The fourth proportional to 138,504.96, 191,136.83 and 74,842.75 is: 103,282.99
Step by Step Solution
- Step 1: Write the proportion equation
138,504.96 : 191,136.83 = 74,842.75 : x - Step 2: Convert to fraction form
138,504.96/191,136.83 = 74,842.75/x - Step 3: Cross multiply
138,504.96x = 191,136.83 × 74,842.75 - Step 4: Simplify right side
138,504.96x = 14,305,205,983.48 - Step 5: Solve for x
x = 14,305,205,983.48/138,504.96 - Step 6: Final answer
x = 103,282.99
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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.