Finding the Fourth Proportional to 121,244,471.68, 167,317,438.05 and 65,489,891.83
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Solution
The fourth proportional to 121,244,471.68, 167,317,438.05 and 65,489,891.83 is: 90,376,086.98
Step by Step Solution
- Step 1: Write the proportion equation
121,244,471.68 : 167,317,438.05 = 65,489,891.83 : x - Step 2: Convert to fraction form
121,244,471.68/167,317,438.05 = 65,489,891.83/x - Step 3: Cross multiply
121,244,471.68x = 167,317,438.05 × 65,489,891.83 - Step 4: Simplify right side
121,244,471.68x = 10,957,600,918,839,776 - Step 5: Solve for x
x = 10,957,600,918,839,776/121,244,471.68 - Step 6: Final answer
x = 90,376,086.98
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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.