Finding the Fourth Proportional to 139,539.12, 192,562.62 and 75,876.96
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Solution
The fourth proportional to 139,539.12, 192,562.62 and 75,876.96 is: 104,709.46
Step by Step Solution
- Step 1: Write the proportion equation
139,539.12 : 192,562.62 = 75,876.96 : x - Step 2: Convert to fraction form
139,539.12/192,562.62 = 75,876.96/x - Step 3: Cross multiply
139,539.12x = 192,562.62 × 75,876.96 - Step 4: Simplify right side
139,539.12x = 14,611,066,215.24 - Step 5: Solve for x
x = 14,611,066,215.24/139,539.12 - Step 6: Final answer
x = 104,709.46
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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.