Finding the Fourth Proportional to 139,519.80, 209,279.70 and 44,749.80
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Solution
The fourth proportional to 139,519.80, 209,279.70 and 44,749.80 is: 67,124.70
Step by Step Solution
- Step 1: Write the proportion equation
139,519.80 : 209,279.70 = 44,749.80 : x - Step 2: Convert to fraction form
139,519.80/209,279.70 = 44,749.80/x - Step 3: Cross multiply
139,519.80x = 209,279.70 × 44,749.80 - Step 4: Simplify right side
139,519.80x = 9,365,224,719.06 - Step 5: Solve for x
x = 9,365,224,719.06/139,519.80 - Step 6: Final answer
x = 67,124.70
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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.