Finding the Fourth Proportional to 178,785.18, 246,620.40 and 107,123.68
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Solution
The fourth proportional to 178,785.18, 246,620.40 and 107,123.68 is: 147,768.88
Step by Step Solution
- Step 1: Write the proportion equation
178,785.18 : 246,620.40 = 107,123.68 : x - Step 2: Convert to fraction form
178,785.18/246,620.40 = 107,123.68/x - Step 3: Cross multiply
178,785.18x = 246,620.40 × 107,123.68 - Step 4: Simplify right side
178,785.18x = 26,418,885,621.49 - Step 5: Solve for x
x = 26,418,885,621.49/178,785.18 - Step 6: Final answer
x = 147,768.88
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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.