Finding the Fourth Proportional to 135,989.44, 187,668.77 and 74,734.81
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Solution
The fourth proportional to 135,989.44, 187,668.77 and 74,734.81 is: 103,135.87
Step by Step Solution
- Step 1: Write the proportion equation
135,989.44 : 187,668.77 = 74,734.81 : x - Step 2: Convert to fraction form
135,989.44/187,668.77 = 74,734.81/x - Step 3: Cross multiply
135,989.44x = 187,668.77 × 74,734.81 - Step 4: Simplify right side
135,989.44x = 14,025,389,026.04 - Step 5: Solve for x
x = 14,025,389,026.04/135,989.44 - Step 6: Final answer
x = 103,135.87
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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.