Finding the Fourth Proportional to 128,816,891.70, 193,225,337.55 and 103,307,723.70
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Solution
The fourth proportional to 128,816,891.70, 193,225,337.55 and 103,307,723.70 is: 154,961,585.55
Step by Step Solution
- Step 1: Write the proportion equation
128,816,891.70 : 193,225,337.55 = 103,307,723.70 : x - Step 2: Convert to fraction form
128,816,891.70/193,225,337.55 = 103,307,723.70/x - Step 3: Cross multiply
128,816,891.70x = 193,225,337.55 × 103,307,723.70 - Step 4: Simplify right side
128,816,891.70x = 19,961,669,783,454,636 - Step 5: Solve for x
x = 19,961,669,783,454,636/128,816,891.70 - Step 6: Final answer
x = 154,961,585.55
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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.