Finding the Fourth Proportional to 91,805,609.70, 137,708,414.55 and 79,848,187.20
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Solution
The fourth proportional to 91,805,609.70, 137,708,414.55 and 79,848,187.20 is: 119,772,280.80
Step by Step Solution
- Step 1: Write the proportion equation
91,805,609.70 : 137,708,414.55 = 79,848,187.20 : x - Step 2: Convert to fraction form
91,805,609.70/137,708,414.55 = 79,848,187.20/x - Step 3: Cross multiply
91,805,609.70x = 137,708,414.55 × 79,848,187.20 - Step 4: Simplify right side
91,805,609.70x = 10,995,767,264,003,606 - Step 5: Solve for x
x = 10,995,767,264,003,606/91,805,609.70 - Step 6: Final answer
x = 119,772,280.80
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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.