Finding the Fourth Proportional to 129,714.18, 178,985.02 and 73,114.62
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Solution
The fourth proportional to 129,714.18, 178,985.02 and 73,114.62 is: 100,886.59
Step by Step Solution
- Step 1: Write the proportion equation
129,714.18 : 178,985.02 = 73,114.62 : x - Step 2: Convert to fraction form
129,714.18/178,985.02 = 73,114.62/x - Step 3: Cross multiply
129,714.18x = 178,985.02 × 73,114.62 - Step 4: Simplify right side
129,714.18x = 13,086,421,722.99 - Step 5: Solve for x
x = 13,086,421,722.99/129,714.18 - Step 6: Final answer
x = 100,886.59
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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.