Finding the Fourth Proportional to 138,697,700.73, 191,396,025.42 and 75,974,076.99
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Solution
The fourth proportional to 138,697,700.73, 191,396,025.42 and 75,974,076.99 is: 104,840,500.56
Step by Step Solution
- Step 1: Write the proportion equation
138,697,700.73 : 191,396,025.42 = 75,974,076.99 : x - Step 2: Convert to fraction form
138,697,700.73/191,396,025.42 = 75,974,076.99/x - Step 3: Cross multiply
138,697,700.73x = 191,396,025.42 × 75,974,076.99 - Step 4: Simplify right side
138,697,700.73x = 14,541,136,370,839,076 - Step 5: Solve for x
x = 14,541,136,370,839,076/138,697,700.73 - Step 6: Final answer
x = 104,840,500.56
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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.