Finding the Fourth Proportional to 128,453.85, 192,663.77 and 58,317.03
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Solution
The fourth proportional to 128,453.85, 192,663.77 and 58,317.03 is: 87,467.82
Step by Step Solution
- Step 1: Write the proportion equation
128,453.85 : 192,663.77 = 58,317.03 : x - Step 2: Convert to fraction form
128,453.85/192,663.77 = 58,317.03/x - Step 3: Cross multiply
128,453.85x = 192,663.77 × 58,317.03 - Step 4: Simplify right side
128,453.85x = 11,235,578,563.42 - Step 5: Solve for x
x = 11,235,578,563.42/128,453.85 - Step 6: Final answer
x = 87,467.82
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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.