Finding the Fourth Proportional to 135,940.80, 203,911.20 and 42,446.88
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Solution
The fourth proportional to 135,940.80, 203,911.20 and 42,446.88 is: 63,670.32
Step by Step Solution
- Step 1: Write the proportion equation
135,940.80 : 203,911.20 = 42,446.88 : x - Step 2: Convert to fraction form
135,940.80/203,911.20 = 42,446.88/x - Step 3: Cross multiply
135,940.80x = 203,911.20 × 42,446.88 - Step 4: Simplify right side
135,940.80x = 8,655,394,237.06 - Step 5: Solve for x
x = 8,655,394,237.06/135,940.80 - Step 6: Final answer
x = 63,670.32
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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.