Finding the Fourth Proportional to 138,825,717.80, 208,238,576.70 and 102,993,909.80
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Solution
The fourth proportional to 138,825,717.80, 208,238,576.70 and 102,993,909.80 is: 154,490,864.70
Step by Step Solution
- Step 1: Write the proportion equation
138,825,717.80 : 208,238,576.70 = 102,993,909.80 : x - Step 2: Convert to fraction form
138,825,717.80/208,238,576.70 = 102,993,909.80/x - Step 3: Cross multiply
138,825,717.80x = 208,238,576.70 × 102,993,909.80 - Step 4: Simplify right side
138,825,717.80x = 21,447,305,185,520,180 - Step 5: Solve for x
x = 21,447,305,185,520,180/138,825,717.80 - Step 6: Final answer
x = 154,490,864.70
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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.