Finding the Fourth Proportional to 135,163.68, 186,522.57 and 74,732.77
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Solution
The fourth proportional to 135,163.68, 186,522.57 and 74,732.77 is: 103,129.39
Step by Step Solution
- Step 1: Write the proportion equation
135,163.68 : 186,522.57 = 74,732.77 : x - Step 2: Convert to fraction form
135,163.68/186,522.57 = 74,732.77/x - Step 3: Cross multiply
135,163.68x = 186,522.57 × 74,732.77 - Step 4: Simplify right side
135,163.68x = 13,939,347,857.31 - Step 5: Solve for x
x = 13,939,347,857.31/135,163.68 - Step 6: Final answer
x = 103,129.39
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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.