Finding the Fourth Proportional to 128,995,777, 178,014,174.42 and 71,049,025
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Solution
The fourth proportional to 128,995,777, 178,014,174.42 and 71,049,025 is: 98,047,655.69
Step by Step Solution
- Step 1: Write the proportion equation
128,995,777 : 178,014,174.42 = 71,049,025 : x - Step 2: Convert to fraction form
128,995,777/178,014,174.42 = 71,049,025/x - Step 3: Cross multiply
128,995,777x = 178,014,174.42 × 71,049,025 - Step 4: Simplify right side
128,995,777x = 12,647,733,528,720,940 - Step 5: Solve for x
x = 12,647,733,528,720,940/128,995,777 - Step 6: Final answer
x = 98,047,655.69
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.