Finding the Fourth Proportional to 136,863.84, 188,830.80 and 79,492.08
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Solution
The fourth proportional to 136,863.84, 188,830.80 and 79,492.08 is: 109,675.08
Step by Step Solution
- Step 1: Write the proportion equation
136,863.84 : 188,830.80 = 79,492.08 : x - Step 2: Convert to fraction form
136,863.84/188,830.80 = 79,492.08/x - Step 3: Cross multiply
136,863.84x = 188,830.80 × 79,492.08 - Step 4: Simplify right side
136,863.84x = 15,010,553,060.06 - Step 5: Solve for x
x = 15,010,553,060.06/136,863.84 - Step 6: Final answer
x = 109,675.08
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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.