Finding the Fourth Proportional to 139,441.30, 192,430.49 and 75,779.09
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Solution
The fourth proportional to 139,441.30, 192,430.49 and 75,779.09 is: 104,575.96
Step by Step Solution
- Step 1: Write the proportion equation
139,441.30 : 192,430.49 = 75,779.09 : x - Step 2: Convert to fraction form
139,441.30/192,430.49 = 75,779.09/x - Step 3: Cross multiply
139,441.30x = 192,430.49 × 75,779.09 - Step 4: Simplify right side
139,441.30x = 14,582,207,883.44 - Step 5: Solve for x
x = 14,582,207,883.44/139,441.30 - Step 6: Final answer
x = 104,575.96
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1.5x scale
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.