Finding the Fourth Proportional to 120,451.39, 166,280.70 and 84,672.07
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Solution
The fourth proportional to 120,451.39, 166,280.70 and 84,672.07 is: 116,888.07
Step by Step Solution
- Step 1: Write the proportion equation
120,451.39 : 166,280.70 = 84,672.07 : x - Step 2: Convert to fraction form
120,451.39/166,280.70 = 84,672.07/x - Step 3: Cross multiply
120,451.39x = 166,280.70 × 84,672.07 - Step 4: Simplify right side
120,451.39x = 14,079,331,070.05 - Step 5: Solve for x
x = 14,079,331,070.05/120,451.39 - Step 6: Final answer
x = 116,888.07
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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.