Finding the Fourth Proportional to 99,068.62, 136,767.74 and 76,357.84
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Solution
The fourth proportional to 99,068.62, 136,767.74 and 76,357.84 is: 105,414.70
Step by Step Solution
- Step 1: Write the proportion equation
99,068.62 : 136,767.74 = 76,357.84 : x - Step 2: Convert to fraction form
99,068.62/136,767.74 = 76,357.84/x - Step 3: Cross multiply
99,068.62x = 136,767.74 × 76,357.84 - Step 4: Simplify right side
99,068.62x = 10,443,288,142.45 - Step 5: Solve for x
x = 10,443,288,142.45/99,068.62 - Step 6: Final answer
x = 105,414.70
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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.