Finding the Fourth Proportional to 136,108.80, 204,163.20 and 129,985.20
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Solution
The fourth proportional to 136,108.80, 204,163.20 and 129,985.20 is: 194,977.80
Step by Step Solution
- Step 1: Write the proportion equation
136,108.80 : 204,163.20 = 129,985.20 : x - Step 2: Convert to fraction form
136,108.80/204,163.20 = 129,985.20/x - Step 3: Cross multiply
136,108.80x = 204,163.20 × 129,985.20 - Step 4: Simplify right side
136,108.80x = 26,538,194,384.64 - Step 5: Solve for x
x = 26,538,194,384.64/136,108.80 - Step 6: Final answer
x = 194,977.80
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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.