Finding the Fourth Proportional to 99,406.15, 137,178.97 and 54,083.09
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Solution
The fourth proportional to 99,406.15, 137,178.97 and 54,083.09 is: 74,633.84
Step by Step Solution
- Step 1: Write the proportion equation
99,406.15 : 137,178.97 = 54,083.09 : x - Step 2: Convert to fraction form
99,406.15/137,178.97 = 54,083.09/x - Step 3: Cross multiply
99,406.15x = 137,178.97 × 54,083.09 - Step 4: Simplify right side
99,406.15x = 7,419,062,788.36 - Step 5: Solve for x
x = 7,419,062,788.36/99,406.15 - Step 6: Final answer
x = 74,633.84
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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.