Finding the Fourth Proportional to 115,639.60, 173,344.20 and 53,201.20
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Solution
The fourth proportional to 115,639.60, 173,344.20 and 53,201.20 is: 79,748.80
Step by Step Solution
- Step 1: Write the proportion equation
115,639.60 : 173,344.20 = 53,201.20 : x - Step 2: Convert to fraction form
115,639.60/173,344.20 = 53,201.20/x - Step 3: Cross multiply
115,639.60x = 173,344.20 × 53,201.20 - Step 4: Simplify right side
115,639.60x = 9,222,119,453.04 - Step 5: Solve for x
x = 9,222,119,453.04/115,639.60 - Step 6: Final answer
x = 79,748.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.