Finding the Fourth Proportional to 136,847.13, 188,845.36 and 76,416.09
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Solution
The fourth proportional to 136,847.13, 188,845.36 and 76,416.09 is: 105,452.15
Step by Step Solution
- Step 1: Write the proportion equation
136,847.13 : 188,845.36 = 76,416.09 : x - Step 2: Convert to fraction form
136,847.13/188,845.36 = 76,416.09/x - Step 3: Cross multiply
136,847.13x = 188,845.36 × 76,416.09 - Step 4: Simplify right side
136,847.13x = 14,430,824,025.84 - Step 5: Solve for x
x = 14,430,824,025.84/136,847.13 - Step 6: Final answer
x = 105,452.15
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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.