Finding the Fourth Proportional to 99,550.98, 137,336.76 and 65,515.68
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Solution
The fourth proportional to 99,550.98, 137,336.76 and 65,515.68 is: 90,382.95
Step by Step Solution
- Step 1: Write the proportion equation
99,550.98 : 137,336.76 = 65,515.68 : x - Step 2: Convert to fraction form
99,550.98/137,336.76 = 65,515.68/x - Step 3: Cross multiply
99,550.98x = 137,336.76 × 65,515.68 - Step 4: Simplify right side
99,550.98x = 8,997,711,220.40 - Step 5: Solve for x
x = 8,997,711,220.40/99,550.98 - Step 6: Final answer
x = 90,382.95
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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.