Finding the Fourth Proportional to 156,153.41, 215,854.86 and 139,324.44
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Solution
The fourth proportional to 156,153.41, 215,854.86 and 139,324.44 is: 192,591.75
Step by Step Solution
- Step 1: Write the proportion equation
156,153.41 : 215,854.86 = 139,324.44 : x - Step 2: Convert to fraction form
156,153.41/215,854.86 = 139,324.44/x - Step 3: Cross multiply
156,153.41x = 215,854.86 × 139,324.44 - Step 4: Simplify right side
156,153.41x = 30,073,857,490.78 - Step 5: Solve for x
x = 30,073,857,490.78/156,153.41 - Step 6: Final answer
x = 192,591.75
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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.