Finding the Fourth Proportional to 135,994,542.40, 187,649,491.23 and 76,447,906.66
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Solution
The fourth proportional to 135,994,542.40, 187,649,491.23 and 76,447,906.66 is: 105,485,194.75
Step by Step Solution
- Step 1: Write the proportion equation
135,994,542.40 : 187,649,491.23 = 76,447,906.66 : x - Step 2: Convert to fraction form
135,994,542.40/187,649,491.23 = 76,447,906.66/x - Step 3: Cross multiply
135,994,542.40x = 187,649,491.23 × 76,447,906.66 - Step 4: Simplify right side
135,994,542.40x = 14,345,410,790,347,528 - Step 5: Solve for x
x = 14,345,410,790,347,528/135,994,542.40 - Step 6: Final answer
x = 105,485,194.75
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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.