Finding the Fourth Proportional to 121,629.36, 182,501.80 and 84,246.96
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Solution
The fourth proportional to 121,629.36, 182,501.80 and 84,246.96 is: 126,410.45
Step by Step Solution
- Step 1: Write the proportion equation
121,629.36 : 182,501.80 = 84,246.96 : x - Step 2: Convert to fraction form
121,629.36/182,501.80 = 84,246.96/x - Step 3: Cross multiply
121,629.36x = 182,501.80 × 84,246.96 - Step 4: Simplify right side
121,629.36x = 15,375,221,844.53 - Step 5: Solve for x
x = 15,375,221,844.53/121,629.36 - Step 6: Final answer
x = 126,410.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.