Finding the Fourth Proportional to 117,714.18, 162,471.36 and 77,431.92
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Solution
The fourth proportional to 117,714.18, 162,471.36 and 77,431.92 is: 106,873.02
Step by Step Solution
- Step 1: Write the proportion equation
117,714.18 : 162,471.36 = 77,431.92 : x - Step 2: Convert to fraction form
117,714.18/162,471.36 = 77,431.92/x - Step 3: Cross multiply
117,714.18x = 162,471.36 × 77,431.92 - Step 4: Simplify right side
117,714.18x = 12,580,469,349.81 - Step 5: Solve for x
x = 12,580,469,349.81/117,714.18 - Step 6: Final answer
x = 106,873.02
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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.