Finding the Fourth Proportional to 103,693.12, 143,110.36 and 58,379.92
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Solution
The fourth proportional to 103,693.12, 143,110.36 and 58,379.92 is: 80,572.09
Step by Step Solution
- Step 1: Write the proportion equation
103,693.12 : 143,110.36 = 58,379.92 : x - Step 2: Convert to fraction form
103,693.12/143,110.36 = 58,379.92/x - Step 3: Cross multiply
103,693.12x = 143,110.36 × 58,379.92 - Step 4: Simplify right side
103,693.12x = 8,354,771,367.97 - Step 5: Solve for x
x = 8,354,771,367.97/103,693.12 - Step 6: Final answer
x = 80,572.09
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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.