Finding the Fourth Proportional to 135,993.36, 203,989.99 and 42,499.11
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Solution
The fourth proportional to 135,993.36, 203,989.99 and 42,499.11 is: 63,748.65
Step by Step Solution
- Step 1: Write the proportion equation
135,993.36 : 203,989.99 = 42,499.11 : x - Step 2: Convert to fraction form
135,993.36/203,989.99 = 42,499.11/x - Step 3: Cross multiply
135,993.36x = 203,989.99 × 42,499.11 - Step 4: Simplify right side
135,993.36x = 8,669,393,023.91 - Step 5: Solve for x
x = 8,669,393,023.91/135,993.36 - Step 6: Final answer
x = 63,748.65
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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.