Finding the Fourth Proportional to 133,239.10, 183,742.87 and 87,230.09
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Solution
The fourth proportional to 133,239.10, 183,742.87 and 87,230.09 is: 120,294.32
Step by Step Solution
- Step 1: Write the proportion equation
133,239.10 : 183,742.87 = 87,230.09 : x - Step 2: Convert to fraction form
133,239.10/183,742.87 = 87,230.09/x - Step 3: Cross multiply
133,239.10x = 183,742.87 × 87,230.09 - Step 4: Simplify right side
133,239.10x = 16,027,907,086.96 - Step 5: Solve for x
x = 16,027,907,086.96/133,239.10 - Step 6: Final answer
x = 120,294.32
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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.