Finding the Fourth Proportional to 139,793.02, 209,674.95 and 39,946.75
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Solution
The fourth proportional to 139,793.02, 209,674.95 and 39,946.75 is: 59,915.96
Step by Step Solution
- Step 1: Write the proportion equation
139,793.02 : 209,674.95 = 39,946.75 : x - Step 2: Convert to fraction form
139,793.02/209,674.95 = 39,946.75/x - Step 3: Cross multiply
139,793.02x = 209,674.95 × 39,946.75 - Step 4: Simplify right side
139,793.02x = 8,375,832,808.91 - Step 5: Solve for x
x = 8,375,832,808.91/139,793.02 - Step 6: Final answer
x = 59,915.96
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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.