Finding the Fourth Proportional to 142,627.68, 196,826.21 and 78,100.99
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Solution
The fourth proportional to 142,627.68, 196,826.21 and 78,100.99 is: 107,779.37
Step by Step Solution
- Step 1: Write the proportion equation
142,627.68 : 196,826.21 = 78,100.99 : x - Step 2: Convert to fraction form
142,627.68/196,826.21 = 78,100.99/x - Step 3: Cross multiply
142,627.68x = 196,826.21 × 78,100.99 - Step 4: Simplify right side
142,627.68x = 15,372,321,562.13 - Step 5: Solve for x
x = 15,372,321,562.13/142,627.68 - Step 6: Final answer
x = 107,779.37
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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.