Finding the Fourth Proportional to 103,842.30, 143,302.94 and 58,520.99
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Solution
The fourth proportional to 103,842.30, 143,302.94 and 58,520.99 is: 80,759.29
Step by Step Solution
- Step 1: Write the proportion equation
103,842.30 : 143,302.94 = 58,520.99 : x - Step 2: Convert to fraction form
103,842.30/143,302.94 = 58,520.99/x - Step 3: Cross multiply
103,842.30x = 143,302.94 × 58,520.99 - Step 4: Simplify right side
103,842.30x = 8,386,229,918.71 - Step 5: Solve for x
x = 8,386,229,918.71/103,842.30 - Step 6: Final answer
x = 80,759.29
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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.