Finding the Fourth Proportional to 138,697,698.73, 191,396,022.66 and 75,974,074.99
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Solution
The fourth proportional to 138,697,698.73, 191,396,022.66 and 75,974,074.99 is: 104,840,497.80
Step by Step Solution
- Step 1: Write the proportion equation
138,697,698.73 : 191,396,022.66 = 75,974,074.99 : x - Step 2: Convert to fraction form
138,697,698.73/191,396,022.66 = 75,974,074.99/x - Step 3: Cross multiply
138,697,698.73x = 191,396,022.66 × 75,974,074.99 - Step 4: Simplify right side
138,697,698.73x = 14,541,135,778,358,578 - Step 5: Solve for x
x = 14,541,135,778,358,578/138,697,698.73 - Step 6: Final answer
x = 104,840,497.80
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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.