Finding the Fourth Proportional to 128,729.70, 193,094.55 and 58,745.70
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Solution
The fourth proportional to 128,729.70, 193,094.55 and 58,745.70 is: 88,118.55
Step by Step Solution
- Step 1: Write the proportion equation
128,729.70 : 193,094.55 = 58,745.70 : x - Step 2: Convert to fraction form
128,729.70/193,094.55 = 58,745.70/x - Step 3: Cross multiply
128,729.70x = 193,094.55 × 58,745.70 - Step 4: Simplify right side
128,729.70x = 11,343,474,505.94 - Step 5: Solve for x
x = 11,343,474,505.94/128,729.70 - Step 6: Final answer
x = 88,118.55
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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.