Finding the Fourth Proportional to 138,344.56, 190,922.58 and 84,612.70
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Solution
The fourth proportional to 138,344.56, 190,922.58 and 84,612.70 is: 116,769.86
Step by Step Solution
- Step 1: Write the proportion equation
138,344.56 : 190,922.58 = 84,612.70 : x - Step 2: Convert to fraction form
138,344.56/190,922.58 = 84,612.70/x - Step 3: Cross multiply
138,344.56x = 190,922.58 × 84,612.70 - Step 4: Simplify right side
138,344.56x = 16,154,474,030.15 - Step 5: Solve for x
x = 16,154,474,030.15/138,344.56 - Step 6: Final answer
x = 116,769.86
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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.