Finding the Fourth Proportional to 140,328.18, 193,591.17 and 83,706.75
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Solution
The fourth proportional to 140,328.18, 193,591.17 and 83,706.75 is: 115,478.50
Step by Step Solution
- Step 1: Write the proportion equation
140,328.18 : 193,591.17 = 83,706.75 : x - Step 2: Convert to fraction form
140,328.18/193,591.17 = 83,706.75/x - Step 3: Cross multiply
140,328.18x = 193,591.17 × 83,706.75 - Step 4: Simplify right side
140,328.18x = 16,204,887,669.40 - Step 5: Solve for x
x = 16,204,887,669.40/140,328.18 - Step 6: Final answer
x = 115,478.50
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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.