Finding the Fourth Proportional to 136,429.99, 188,279.06 and 76,000.62
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Solution
The fourth proportional to 136,429.99, 188,279.06 and 76,000.62 is: 104,884.02
Step by Step Solution
- Step 1: Write the proportion equation
136,429.99 : 188,279.06 = 76,000.62 : x - Step 2: Convert to fraction form
136,429.99/188,279.06 = 76,000.62/x - Step 3: Cross multiply
136,429.99x = 188,279.06 × 76,000.62 - Step 4: Simplify right side
136,429.99x = 14,309,325,293.02 - Step 5: Solve for x
x = 14,309,325,293.02/136,429.99 - Step 6: Final answer
x = 104,884.02
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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.