Finding the Fourth Proportional to 129,129,907.75, 193,736,689.36 and 77,306,405.83
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Solution
The fourth proportional to 129,129,907.75, 193,736,689.36 and 77,306,405.83 is: 115,984,649.82
Step by Step Solution
- Step 1: Write the proportion equation
129,129,907.75 : 193,736,689.36 = 77,306,405.83 : x - Step 2: Convert to fraction form
129,129,907.75/193,736,689.36 = 77,306,405.83/x - Step 3: Cross multiply
129,129,907.75x = 193,736,689.36 × 77,306,405.83 - Step 4: Simplify right side
129,129,907.75x = 14,977,087,131,147,194 - Step 5: Solve for x
x = 14,977,087,131,147,194/129,129,907.75 - Step 6: Final answer
x = 115,984,649.82
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.