Finding the Fourth Proportional to 102,689.36, 141,709.75 and 57,367.99
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Solution
The fourth proportional to 102,689.36, 141,709.75 and 57,367.99 is: 79,166.95
Step by Step Solution
- Step 1: Write the proportion equation
102,689.36 : 141,709.75 = 57,367.99 : x - Step 2: Convert to fraction form
102,689.36/141,709.75 = 57,367.99/x - Step 3: Cross multiply
102,689.36x = 141,709.75 × 57,367.99 - Step 4: Simplify right side
102,689.36x = 8,129,603,023.21 - Step 5: Solve for x
x = 8,129,603,023.21/102,689.36 - Step 6: Final answer
x = 79,166.95
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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.