Finding the Fourth Proportional to 128,775,446.43, 192,290,907.32 and 102,216,310.05
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Solution
The fourth proportional to 128,775,446.43, 192,290,907.32 and 102,216,310.05 is: 152,632,101.45
Step by Step Solution
- Step 1: Write the proportion equation
128,775,446.43 : 192,290,907.32 = 102,216,310.05 : x - Step 2: Convert to fraction form
128,775,446.43/192,290,907.32 = 102,216,310.05/x - Step 3: Cross multiply
128,775,446.43x = 192,290,907.32 × 102,216,310.05 - Step 4: Simplify right side
128,775,446.43x = 19,655,267,003,010,252 - Step 5: Solve for x
x = 19,655,267,003,010,252/128,775,446.43 - Step 6: Final answer
x = 152,632,101.45
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.