Finding the Fourth Proportional to 160,319.21, 221,232.39 and 87,720.53
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Solution
The fourth proportional to 160,319.21, 221,232.39 and 87,720.53 is: 121,049.89
Step by Step Solution
- Step 1: Write the proportion equation
160,319.21 : 221,232.39 = 87,720.53 : x - Step 2: Convert to fraction form
160,319.21/221,232.39 = 87,720.53/x - Step 3: Cross multiply
160,319.21x = 221,232.39 × 87,720.53 - Step 4: Simplify right side
160,319.21x = 19,406,621,397.80 - Step 5: Solve for x
x = 19,406,621,397.80/160,319.21 - Step 6: Final answer
x = 121,049.89
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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.