Finding the Fourth Proportional to 99,173,104.38, 136,897,378.09 and 74,464,640.82
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Solution
The fourth proportional to 99,173,104.38, 136,897,378.09 and 74,464,640.82 is: 102,790,107.78
Step by Step Solution
- Step 1: Write the proportion equation
99,173,104.38 : 136,897,378.09 = 74,464,640.82 : x - Step 2: Convert to fraction form
99,173,104.38/136,897,378.09 = 74,464,640.82/x - Step 3: Cross multiply
99,173,104.38x = 136,897,378.09 × 74,464,640.82 - Step 4: Simplify right side
99,173,104.38x = 10,194,014,088,485,426 - Step 5: Solve for x
x = 10,194,014,088,485,426/99,173,104.38 - Step 6: Final answer
x = 102,790,107.78
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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.