Finding the Fourth Proportional to 129,721,834.20, 179,016,128.46 and 70,984,497.09
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Solution
The fourth proportional to 129,721,834.20, 179,016,128.46 and 70,984,497.09 is: 97,958,604.49
Step by Step Solution
- Step 1: Write the proportion equation
129,721,834.20 : 179,016,128.46 = 70,984,497.09 : x - Step 2: Convert to fraction form
129,721,834.20/179,016,128.46 = 70,984,497.09/x - Step 3: Cross multiply
129,721,834.20x = 179,016,128.46 × 70,984,497.09 - Step 4: Simplify right side
129,721,834.20x = 12,707,369,849,731,938 - Step 5: Solve for x
x = 12,707,369,849,731,938/129,721,834.20 - Step 6: Final answer
x = 97,958,604.49
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.