Finding the Fourth Proportional to 174,423.80, 261,635.70 and 139,431.80
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Solution
The fourth proportional to 174,423.80, 261,635.70 and 139,431.80 is: 209,147.70
Step by Step Solution
- Step 1: Write the proportion equation
174,423.80 : 261,635.70 = 139,431.80 : x - Step 2: Convert to fraction form
174,423.80/261,635.70 = 139,431.80/x - Step 3: Cross multiply
174,423.80x = 261,635.70 × 139,431.80 - Step 4: Simplify right side
174,423.80x = 36,480,336,595.26 - Step 5: Solve for x
x = 36,480,336,595.26/174,423.80 - Step 6: Final answer
x = 209,147.70
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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.