Finding the Fourth Proportional to 191,719,207.80, 287,578,811.70 and 130,497,204.60
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Solution
The fourth proportional to 191,719,207.80, 287,578,811.70 and 130,497,204.60 is: 195,745,806.90
Step by Step Solution
- Step 1: Write the proportion equation
191,719,207.80 : 287,578,811.70 = 130,497,204.60 : x - Step 2: Convert to fraction form
191,719,207.80/287,578,811.70 = 130,497,204.60/x - Step 3: Cross multiply
191,719,207.80x = 287,578,811.70 × 130,497,204.60 - Step 4: Simplify right side
191,719,207.80x = 37,528,231,029,039,768 - Step 5: Solve for x
x = 37,528,231,029,039,768/191,719,207.80 - Step 6: Final answer
x = 195,745,806.90
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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.