Finding the Fourth Proportional to 140,068.84, 193,296.39 and 76,407.97
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Solution
The fourth proportional to 140,068.84, 193,296.39 and 76,407.97 is: 105,443.75
Step by Step Solution
- Step 1: Write the proportion equation
140,068.84 : 193,296.39 = 76,407.97 : x - Step 2: Convert to fraction form
140,068.84/193,296.39 = 76,407.97/x - Step 3: Cross multiply
140,068.84x = 193,296.39 × 76,407.97 - Step 4: Simplify right side
140,068.84x = 14,769,383,801.75 - Step 5: Solve for x
x = 14,769,383,801.75/140,068.84 - Step 6: Final answer
x = 105,443.75
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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.