Finding the Fourth Proportional to 121,854.24, 182,835.84 and 77,469.12
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Solution
The fourth proportional to 121,854.24, 182,835.84 and 77,469.12 is: 116,238.32
Step by Step Solution
- Step 1: Write the proportion equation
121,854.24 : 182,835.84 = 77,469.12 : x - Step 2: Convert to fraction form
121,854.24/182,835.84 = 77,469.12/x - Step 3: Cross multiply
121,854.24x = 182,835.84 × 77,469.12 - Step 4: Simplify right side
121,854.24x = 14,164,131,629.26 - Step 5: Solve for x
x = 14,164,131,629.26/121,854.24 - Step 6: Final answer
x = 116,238.32
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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.