Finding the Fourth Proportional to 99,454.09, 137,249.57 and 54,135.02
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Solution
The fourth proportional to 99,454.09, 137,249.57 and 54,135.02 is: 74,707.92
Step by Step Solution
- Step 1: Write the proportion equation
99,454.09 : 137,249.57 = 54,135.02 : x - Step 2: Convert to fraction form
99,454.09/137,249.57 = 54,135.02/x - Step 3: Cross multiply
99,454.09x = 137,249.57 × 54,135.02 - Step 4: Simplify right side
99,454.09x = 7,430,008,216.94 - Step 5: Solve for x
x = 7,430,008,216.94/99,454.09 - Step 6: Final answer
x = 74,707.92
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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.