Finding the Fourth Proportional to 113,989.91, 157,224.49 and 80,005.98
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Solution
The fourth proportional to 113,989.91, 157,224.49 and 80,005.98 is: 110,350.99
Step by Step Solution
- Step 1: Write the proportion equation
113,989.91 : 157,224.49 = 80,005.98 : x - Step 2: Convert to fraction form
113,989.91/157,224.49 = 80,005.98/x - Step 3: Cross multiply
113,989.91x = 157,224.49 × 80,005.98 - Step 4: Simplify right side
113,989.91x = 12,578,899,402.45 - Step 5: Solve for x
x = 12,578,899,402.45/113,989.91 - Step 6: Final answer
x = 110,350.99
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1.5x scale
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.