Finding the Fourth Proportional to 137,107,065.61, 189,207,729.99 and 78,370,991.87
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Solution
The fourth proportional to 137,107,065.61, 189,207,729.99 and 78,370,991.87 is: 108,151,957.03
Step by Step Solution
- Step 1: Write the proportion equation
137,107,065.61 : 189,207,729.99 = 78,370,991.87 : x - Step 2: Convert to fraction form
137,107,065.61/189,207,729.99 = 78,370,991.87/x - Step 3: Cross multiply
137,107,065.61x = 189,207,729.99 × 78,370,991.87 - Step 4: Simplify right side
137,107,065.61x = 14,828,397,468,598,390 - Step 5: Solve for x
x = 14,828,397,468,598,390/137,107,065.61 - Step 6: Final answer
x = 108,151,957.03
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.