Finding the Fourth Proportional to 129,356.60, 194,034.90 and 97,863.80
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Solution
The fourth proportional to 129,356.60, 194,034.90 and 97,863.80 is: 146,795.70
Step by Step Solution
- Step 1: Write the proportion equation
129,356.60 : 194,034.90 = 97,863.80 : x - Step 2: Convert to fraction form
129,356.60/194,034.90 = 97,863.80/x - Step 3: Cross multiply
129,356.60x = 194,034.90 × 97,863.80 - Step 4: Simplify right side
129,356.60x = 18,988,992,646.62 - Step 5: Solve for x
x = 18,988,992,646.62/129,356.60 - Step 6: Final answer
x = 146,795.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.