Finding the Fourth Proportional to 138,052,969.92, 190,517,086.08 and 76,177,293.12
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Solution
The fourth proportional to 138,052,969.92, 190,517,086.08 and 76,177,293.12 is: 105,126,864.85
Step by Step Solution
- Step 1: Write the proportion equation
138,052,969.92 : 190,517,086.08 = 76,177,293.12 : x - Step 2: Convert to fraction form
138,052,969.92/190,517,086.08 = 76,177,293.12/x - Step 3: Cross multiply
138,052,969.92x = 190,517,086.08 × 76,177,293.12 - Step 4: Simplify right side
138,052,969.92x = 14,513,075,910,684,434 - Step 5: Solve for x
x = 14,513,075,910,684,434/138,052,969.92 - Step 6: Final answer
x = 105,126,864.85
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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.