Finding the Fourth Proportional to 137,331.09, 189,536.10 and 99,213.95
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Solution
The fourth proportional to 137,331.09, 189,536.10 and 99,213.95 is: 136,929.12
Step by Step Solution
- Step 1: Write the proportion equation
137,331.09 : 189,536.10 = 99,213.95 : x - Step 2: Convert to fraction form
137,331.09/189,536.10 = 99,213.95/x - Step 3: Cross multiply
137,331.09x = 189,536.10 × 99,213.95 - Step 4: Simplify right side
137,331.09x = 18,804,625,622.44 - Step 5: Solve for x
x = 18,804,625,622.44/137,331.09 - Step 6: Final answer
x = 136,929.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.