Finding the Fourth Proportional to 91,806,145.20, 137,709,217.80 and 79,848,722.70
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Solution
The fourth proportional to 91,806,145.20, 137,709,217.80 and 79,848,722.70 is: 119,773,084.05
Step by Step Solution
- Step 1: Write the proportion equation
91,806,145.20 : 137,709,217.80 = 79,848,722.70 : x - Step 2: Convert to fraction form
91,806,145.20/137,709,217.80 = 79,848,722.70/x - Step 3: Cross multiply
91,806,145.20x = 137,709,217.80 × 79,848,722.70 - Step 4: Simplify right side
91,806,145.20x = 10,995,905,145,346,106 - Step 5: Solve for x
x = 10,995,905,145,346,106/91,806,145.20 - Step 6: Final answer
x = 119,773,084.05
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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.