Finding the Fourth Proportional to 103,699.20, 143,107.62 and 58,378.80
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Solution
The fourth proportional to 103,699.20, 143,107.62 and 58,378.80 is: 80,564.28
Step by Step Solution
- Step 1: Write the proportion equation
103,699.20 : 143,107.62 = 58,378.80 : x - Step 2: Convert to fraction form
103,699.20/143,107.62 = 58,378.80/x - Step 3: Cross multiply
103,699.20x = 143,107.62 × 58,378.80 - Step 4: Simplify right side
103,699.20x = 8,354,451,126.46 - Step 5: Solve for x
x = 8,354,451,126.46/103,699.20 - Step 6: Final answer
x = 80,564.28
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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.