Finding the Fourth Proportional to 122,925.68, 169,645.04 and 71,939.44
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Solution
The fourth proportional to 122,925.68, 169,645.04 and 71,939.44 is: 99,280.88
Step by Step Solution
- Step 1: Write the proportion equation
122,925.68 : 169,645.04 = 71,939.44 : x - Step 2: Convert to fraction form
122,925.68/169,645.04 = 71,939.44/x - Step 3: Cross multiply
122,925.68x = 169,645.04 × 71,939.44 - Step 4: Simplify right side
122,925.68x = 12,204,169,176.38 - Step 5: Solve for x
x = 12,204,169,176.38/122,925.68 - Step 6: Final answer
x = 99,280.88
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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.