Finding the Fourth Proportional to 119,121.99, 164,387.21 and 65,406.53
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Solution
The fourth proportional to 119,121.99, 164,387.21 and 65,406.53 is: 90,260.39
Step by Step Solution
- Step 1: Write the proportion equation
119,121.99 : 164,387.21 = 65,406.53 : x - Step 2: Convert to fraction form
119,121.99/164,387.21 = 65,406.53/x - Step 3: Cross multiply
119,121.99x = 164,387.21 × 65,406.53 - Step 4: Simplify right side
119,121.99x = 10,751,997,066.42 - Step 5: Solve for x
x = 10,751,997,066.42/119,121.99 - Step 6: Final answer
x = 90,260.39
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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.