Finding the Fourth Proportional to 91,553.80, 137,330.70 and 73,121.80
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Solution
The fourth proportional to 91,553.80, 137,330.70 and 73,121.80 is: 109,682.70
Step by Step Solution
- Step 1: Write the proportion equation
91,553.80 : 137,330.70 = 73,121.80 : x - Step 2: Convert to fraction form
91,553.80/137,330.70 = 73,121.80/x - Step 3: Cross multiply
91,553.80x = 137,330.70 × 73,121.80 - Step 4: Simplify right side
91,553.80x = 10,041,867,979.26 - Step 5: Solve for x
x = 10,041,867,979.26/91,553.80 - Step 6: Final answer
x = 109,682.70
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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.