Finding the Fourth Proportional to 129,304.90, 178,524.12 and 83,385.08
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Solution
The fourth proportional to 129,304.90, 178,524.12 and 83,385.08 is: 115,125.17
Step by Step Solution
- Step 1: Write the proportion equation
129,304.90 : 178,524.12 = 83,385.08 : x - Step 2: Convert to fraction form
129,304.90/178,524.12 = 83,385.08/x - Step 3: Cross multiply
129,304.90x = 178,524.12 × 83,385.08 - Step 4: Simplify right side
129,304.90x = 14,886,248,028.13 - Step 5: Solve for x
x = 14,886,248,028.13/129,304.90 - Step 6: Final answer
x = 115,125.17
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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.