Finding the Fourth Proportional to 142,921.19, 197,199.70 and 82,478.99
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Solution
The fourth proportional to 142,921.19, 197,199.70 and 82,478.99 is: 113,802.80
Step by Step Solution
- Step 1: Write the proportion equation
142,921.19 : 197,199.70 = 82,478.99 : x - Step 2: Convert to fraction form
142,921.19/197,199.70 = 82,478.99/x - Step 3: Cross multiply
142,921.19x = 197,199.70 × 82,478.99 - Step 4: Simplify right side
142,921.19x = 16,264,832,371.10 - Step 5: Solve for x
x = 16,264,832,371.10/142,921.19 - Step 6: Final answer
x = 113,802.80
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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.