Finding the Fourth Proportional to 128,722.51, 192,679.84 and 88,506.82
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Solution
The fourth proportional to 128,722.51, 192,679.84 and 88,506.82 is: 132,482.50
Step by Step Solution
- Step 1: Write the proportion equation
128,722.51 : 192,679.84 = 88,506.82 : x - Step 2: Convert to fraction form
128,722.51/192,679.84 = 88,506.82/x - Step 3: Cross multiply
128,722.51x = 192,679.84 × 88,506.82 - Step 4: Simplify right side
128,722.51x = 17,053,479,916.51 - Step 5: Solve for x
x = 17,053,479,916.51/128,722.51 - Step 6: Final answer
x = 132,482.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.