Finding the Fourth Proportional to 128,757.24, 193,004.64 and 117,406.80
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Solution
The fourth proportional to 128,757.24, 193,004.64 and 117,406.80 is: 175,990.55
Step by Step Solution
- Step 1: Write the proportion equation
128,757.24 : 193,004.64 = 117,406.80 : x - Step 2: Convert to fraction form
128,757.24/193,004.64 = 117,406.80/x - Step 3: Cross multiply
128,757.24x = 193,004.64 × 117,406.80 - Step 4: Simplify right side
128,757.24x = 22,660,057,167.55 - Step 5: Solve for x
x = 22,660,057,167.55/128,757.24 - Step 6: Final answer
x = 175,990.55
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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.