Finding the Fourth Proportional to 99,234.20, 136,933.31 and 56,205.09
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Solution
The fourth proportional to 99,234.20, 136,933.31 and 56,205.09 is: 77,557.43
Step by Step Solution
- Step 1: Write the proportion equation
99,234.20 : 136,933.31 = 56,205.09 : x - Step 2: Convert to fraction form
99,234.20/136,933.31 = 56,205.09/x - Step 3: Cross multiply
99,234.20x = 136,933.31 × 56,205.09 - Step 4: Simplify right side
99,234.20x = 7,696,348,731.52 - Step 5: Solve for x
x = 7,696,348,731.52/99,234.20 - Step 6: Final answer
x = 77,557.43
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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.