Finding the Fourth Proportional to 113,553.51, 170,400.74 and 77,118.09
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Solution
The fourth proportional to 113,553.51, 170,400.74 and 77,118.09 is: 115,724.99
Step by Step Solution
- Step 1: Write the proportion equation
113,553.51 : 170,400.74 = 77,118.09 : x - Step 2: Convert to fraction form
113,553.51/170,400.74 = 77,118.09/x - Step 3: Cross multiply
113,553.51x = 170,400.74 × 77,118.09 - Step 4: Simplify right side
113,553.51x = 13,140,979,217.80 - Step 5: Solve for x
x = 13,140,979,217.80/113,553.51 - Step 6: Final answer
x = 115,724.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.