Finding the Fourth Proportional to 129,480.96, 178,688.58 and 71,340.09
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Solution
The fourth proportional to 129,480.96, 178,688.58 and 71,340.09 is: 98,452.00
Step by Step Solution
- Step 1: Write the proportion equation
129,480.96 : 178,688.58 = 71,340.09 : x - Step 2: Convert to fraction form
129,480.96/178,688.58 = 71,340.09/x - Step 3: Cross multiply
129,480.96x = 178,688.58 × 71,340.09 - Step 4: Simplify right side
129,480.96x = 12,747,659,847.98 - Step 5: Solve for x
x = 12,747,659,847.98/129,480.96 - Step 6: Final answer
x = 98,452.00
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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.