Finding the Fourth Proportional to 208,125.36, 287,213.88 and 112,632.05
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Solution
The fourth proportional to 208,125.36, 287,213.88 and 112,632.05 is: 155,432.70
Step by Step Solution
- Step 1: Write the proportion equation
208,125.36 : 287,213.88 = 112,632.05 : x - Step 2: Convert to fraction form
208,125.36/287,213.88 = 112,632.05/x - Step 3: Cross multiply
208,125.36x = 287,213.88 × 112,632.05 - Step 4: Simplify right side
208,125.36x = 32,349,486,656.78 - Step 5: Solve for x
x = 32,349,486,656.78/208,125.36 - Step 6: Final answer
x = 155,432.70
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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.