Finding the Fourth Proportional to 100,151.08, 138,206.46 and 57,707.08
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Solution
The fourth proportional to 100,151.08, 138,206.46 and 57,707.08 is: 79,634.60
Step by Step Solution
- Step 1: Write the proportion equation
100,151.08 : 138,206.46 = 57,707.08 : x - Step 2: Convert to fraction form
100,151.08/138,206.46 = 57,707.08/x - Step 3: Cross multiply
100,151.08x = 138,206.46 × 57,707.08 - Step 4: Simplify right side
100,151.08x = 7,975,491,243.74 - Step 5: Solve for x
x = 7,975,491,243.74/100,151.08 - Step 6: Final answer
x = 79,634.60
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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.