Finding the Fourth Proportional to 119,920.63, 165,490.68 and 66,205.74
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Solution
The fourth proportional to 119,920.63, 165,490.68 and 66,205.74 is: 91,364.03
Step by Step Solution
- Step 1: Write the proportion equation
119,920.63 : 165,490.68 = 66,205.74 : x - Step 2: Convert to fraction form
119,920.63/165,490.68 = 66,205.74/x - Step 3: Cross multiply
119,920.63x = 165,490.68 × 66,205.74 - Step 4: Simplify right side
119,920.63x = 10,956,432,105.05 - Step 5: Solve for x
x = 10,956,432,105.05/119,920.63 - Step 6: Final answer
x = 91,364.03
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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.