Finding the Fourth Proportional to 138,446.26, 191,055.92 and 74,784.09
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Solution
The fourth proportional to 138,446.26, 191,055.92 and 74,784.09 is: 103,202.08
Step by Step Solution
- Step 1: Write the proportion equation
138,446.26 : 191,055.92 = 74,784.09 : x - Step 2: Convert to fraction form
138,446.26/191,055.92 = 74,784.09/x - Step 3: Cross multiply
138,446.26x = 191,055.92 × 74,784.09 - Step 4: Simplify right side
138,446.26x = 14,287,942,347.99 - Step 5: Solve for x
x = 14,287,942,347.99/138,446.26 - Step 6: Final answer
x = 103,202.08
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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.