Finding the Fourth Proportional to 100,147.14, 138,195.18 and 57,709.08
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Solution
The fourth proportional to 100,147.14, 138,195.18 and 57,709.08 is: 79,633.99
Step by Step Solution
- Step 1: Write the proportion equation
100,147.14 : 138,195.18 = 57,709.08 : x - Step 2: Convert to fraction form
100,147.14/138,195.18 = 57,709.08/x - Step 3: Cross multiply
100,147.14x = 138,195.18 × 57,709.08 - Step 4: Simplify right side
100,147.14x = 7,975,116,698.23 - Step 5: Solve for x
x = 7,975,116,698.23/100,147.14 - Step 6: Final answer
x = 79,633.99
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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.