Finding the Fourth Proportional to 99,215.44, 136,918.79 and 53,894.31
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Solution
The fourth proportional to 99,215.44, 136,918.79 and 53,894.31 is: 74,374.95
Step by Step Solution
- Step 1: Write the proportion equation
99,215.44 : 136,918.79 = 53,894.31 : x - Step 2: Convert to fraction form
99,215.44/136,918.79 = 53,894.31/x - Step 3: Cross multiply
99,215.44x = 136,918.79 × 53,894.31 - Step 4: Simplify right side
99,215.44x = 7,379,143,713.08 - Step 5: Solve for x
x = 7,379,143,713.08/99,215.44 - Step 6: Final answer
x = 74,374.95
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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.