Finding the Fourth Proportional to 149,056.21, 205,697.42 and 85,394.26
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Solution
The fourth proportional to 149,056.21, 205,697.42 and 85,394.26 is: 117,843.99
Step by Step Solution
- Step 1: Write the proportion equation
149,056.21 : 205,697.42 = 85,394.26 : x - Step 2: Convert to fraction form
149,056.21/205,697.42 = 85,394.26/x - Step 3: Cross multiply
149,056.21x = 205,697.42 × 85,394.26 - Step 4: Simplify right side
149,056.21x = 17,565,378,964.81 - Step 5: Solve for x
x = 17,565,378,964.81/149,056.21 - Step 6: Final answer
x = 117,843.99
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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.