Finding the Fourth Proportional to 129,526,000.20, 178,745,589.42 and 73,771,416.84
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Solution
The fourth proportional to 129,526,000.20, 178,745,589.42 and 73,771,416.84 is: 101,804,389.58
Step by Step Solution
- Step 1: Write the proportion equation
129,526,000.20 : 178,745,589.42 = 73,771,416.84 : x - Step 2: Convert to fraction form
129,526,000.20/178,745,589.42 = 73,771,416.84/x - Step 3: Cross multiply
129,526,000.20x = 178,745,589.42 × 73,771,416.84 - Step 4: Simplify right side
129,526,000.20x = 13,186,315,385,414,314 - Step 5: Solve for x
x = 13,186,315,385,414,314/129,526,000.20 - Step 6: Final answer
x = 101,804,389.58
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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.