Finding the Fourth Proportional to 113,431.05, 156,337.07 and 83,151.99
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Solution
The fourth proportional to 113,431.05, 156,337.07 and 83,151.99 is: 114,604.76
Step by Step Solution
- Step 1: Write the proportion equation
113,431.05 : 156,337.07 = 83,151.99 : x - Step 2: Convert to fraction form
113,431.05/156,337.07 = 83,151.99/x - Step 3: Cross multiply
113,431.05x = 156,337.07 × 83,151.99 - Step 4: Simplify right side
113,431.05x = 12,999,738,065.51 - Step 5: Solve for x
x = 12,999,738,065.51/113,431.05 - Step 6: Final answer
x = 114,604.76
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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.