Finding the Fourth Proportional to 128,664,302.80, 192,996,454.20 and 115,059,413.20
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Solution
The fourth proportional to 128,664,302.80, 192,996,454.20 and 115,059,413.20 is: 172,589,119.80
Step by Step Solution
- Step 1: Write the proportion equation
128,664,302.80 : 192,996,454.20 = 115,059,413.20 : x - Step 2: Convert to fraction form
128,664,302.80/192,996,454.20 = 115,059,413.20/x - Step 3: Cross multiply
128,664,302.80x = 192,996,454.20 × 115,059,413.20 - Step 4: Simplify right side
128,664,302.80x = 22,206,058,769,932,676 - Step 5: Solve for x
x = 22,206,058,769,932,676/128,664,302.80 - Step 6: Final answer
x = 172,589,119.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.