Finding the Fourth Proportional to 115,977.09, 160,138.85 and 89,076.99
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Solution
The fourth proportional to 115,977.09, 160,138.85 and 89,076.99 is: 122,995.73
Step by Step Solution
- Step 1: Write the proportion equation
115,977.09 : 160,138.85 = 89,076.99 : x - Step 2: Convert to fraction form
115,977.09/160,138.85 = 89,076.99/x - Step 3: Cross multiply
115,977.09x = 160,138.85 × 89,076.99 - Step 4: Simplify right side
115,977.09x = 14,264,686,294.68 - Step 5: Solve for x
x = 14,264,686,294.68/115,977.09 - Step 6: Final answer
x = 122,995.73
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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.