Finding the Fourth Proportional to 128,816,891.20, 193,225,336.80 and 128,816,891.20
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Solution
The fourth proportional to 128,816,891.20, 193,225,336.80 and 128,816,891.20 is: 193,225,336.80
Step by Step Solution
- Step 1: Write the proportion equation
128,816,891.20 : 193,225,336.80 = 128,816,891.20 : x - Step 2: Convert to fraction form
128,816,891.20/193,225,336.80 = 128,816,891.20/x - Step 3: Cross multiply
128,816,891.20x = 193,225,336.80 × 128,816,891.20 - Step 4: Simplify right side
128,816,891.20x = 24,890,687,187,648,960 - Step 5: Solve for x
x = 24,890,687,187,648,960/128,816,891.20 - Step 6: Final answer
x = 193,225,336.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.