Finding the Fourth Proportional to 128,400.85, 192,563.61 and 48,381.09
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Solution
The fourth proportional to 128,400.85, 192,563.61 and 48,381.09 is: 72,557.44
Step by Step Solution
- Step 1: Write the proportion equation
128,400.85 : 192,563.61 = 48,381.09 : x - Step 2: Convert to fraction form
128,400.85/192,563.61 = 48,381.09/x - Step 3: Cross multiply
128,400.85x = 192,563.61 × 48,381.09 - Step 4: Simplify right side
128,400.85x = 9,316,437,346.13 - Step 5: Solve for x
x = 9,316,437,346.13/128,400.85 - Step 6: Final answer
x = 72,557.44
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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.