Finding the Fourth Proportional to 129,912,499.13, 194,868,999.54 and 31,543,791.08
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Solution
The fourth proportional to 129,912,499.13, 194,868,999.54 and 31,543,791.08 is: 47,315,747.52
Step by Step Solution
- Step 1: Write the proportion equation
129,912,499.13 : 194,868,999.54 = 31,543,791.08 : x - Step 2: Convert to fraction form
129,912,499.13/194,868,999.54 = 31,543,791.08/x - Step 3: Cross multiply
129,912,499.13x = 194,868,999.54 × 31,543,791.08 - Step 4: Simplify right side
129,912,499.13x = 6,146,907,008,484,031 - Step 5: Solve for x
x = 6,146,907,008,484,031/129,912,499.13 - Step 6: Final answer
x = 47,315,747.52
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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.