Finding the Fourth Proportional to 138,363.24, 190,955.62 and 84,684.00
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Solution
The fourth proportional to 138,363.24, 190,955.62 and 84,684.00 is: 116,872.70
Step by Step Solution
- Step 1: Write the proportion equation
138,363.24 : 190,955.62 = 84,684.00 : x - Step 2: Convert to fraction form
138,363.24/190,955.62 = 84,684.00/x - Step 3: Cross multiply
138,363.24x = 190,955.62 × 84,684.00 - Step 4: Simplify right side
138,363.24x = 16,170,884,769.30 - Step 5: Solve for x
x = 16,170,884,769.30/138,363.24 - Step 6: Final answer
x = 116,872.70
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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.