Finding the Fourth Proportional to 100,662,855.17, 138,912,562.04 and 58,278,201.72
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Solution
The fourth proportional to 100,662,855.17, 138,912,562.04 and 58,278,201.72 is: 80,422,657.38
Step by Step Solution
- Step 1: Write the proportion equation
100,662,855.17 : 138,912,562.04 = 58,278,201.72 : x - Step 2: Convert to fraction form
100,662,855.17/138,912,562.04 = 58,278,201.72/x - Step 3: Cross multiply
100,662,855.17x = 138,912,562.04 × 58,278,201.72 - Step 4: Simplify right side
100,662,855.17x = 8,095,574,311,717,743 - Step 5: Solve for x
x = 8,095,574,311,717,743/100,662,855.17 - Step 6: Final answer
x = 80,422,657.38
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1.5x scale
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.