Finding the Fourth Proportional to 129,489,785.70, 194,234,678.55 and 129,489,785.70
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Solution
The fourth proportional to 129,489,785.70, 194,234,678.55 and 129,489,785.70 is: 194,234,678.55
Step by Step Solution
- Step 1: Write the proportion equation
129,489,785.70 : 194,234,678.55 = 129,489,785.70 : x - Step 2: Convert to fraction form
129,489,785.70/194,234,678.55 = 129,489,785.70/x - Step 3: Cross multiply
129,489,785.70x = 194,234,678.55 × 129,489,785.70 - Step 4: Simplify right side
129,489,785.70x = 25,151,406,900,947,888 - Step 5: Solve for x
x = 25,151,406,900,947,888/129,489,785.70 - Step 6: Final answer
x = 194,234,678.55
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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.