Finding the Fourth Proportional to 99,493.21, 137,296.04 and 54,171.05
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Solution
The fourth proportional to 99,493.21, 137,296.04 and 54,171.05 is: 74,753.55
Step by Step Solution
- Step 1: Write the proportion equation
99,493.21 : 137,296.04 = 54,171.05 : x - Step 2: Convert to fraction form
99,493.21/137,296.04 = 54,171.05/x - Step 3: Cross multiply
99,493.21x = 137,296.04 × 54,171.05 - Step 4: Simplify right side
99,493.21x = 7,437,470,720.03 - Step 5: Solve for x
x = 7,437,470,720.03/99,493.21 - Step 6: Final answer
x = 74,753.55
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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.