Finding the Fourth Proportional to 125,990,713.94, 173,768,620.28 and 81,951,775.65
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Solution
The fourth proportional to 125,990,713.94, 173,768,620.28 and 81,951,775.65 is: 113,029,337.95
Step by Step Solution
- Step 1: Write the proportion equation
125,990,713.94 : 173,768,620.28 = 81,951,775.65 : x - Step 2: Convert to fraction form
125,990,713.94/173,768,620.28 = 81,951,775.65/x - Step 3: Cross multiply
125,990,713.94x = 173,768,620.28 × 81,951,775.65 - Step 4: Simplify right side
125,990,713.94x = 14,240,646,983,786,842 - Step 5: Solve for x
x = 14,240,646,983,786,842/125,990,713.94 - Step 6: Final answer
x = 113,029,337.95
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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.