Finding the Fourth Proportional to 138,945,787.36, 191,619,735.60 and 86,739,635.68
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Solution
The fourth proportional to 138,945,787.36, 191,619,735.60 and 86,739,635.68 is: 119,622,382.02
Step by Step Solution
- Step 1: Write the proportion equation
138,945,787.36 : 191,619,735.60 = 86,739,635.68 : x - Step 2: Convert to fraction form
138,945,787.36/191,619,735.60 = 86,739,635.68/x - Step 3: Cross multiply
138,945,787.36x = 191,619,735.60 × 86,739,635.68 - Step 4: Simplify right side
138,945,787.36x = 16,621,026,055,041,928 - Step 5: Solve for x
x = 16,621,026,055,041,928/138,945,787.36 - Step 6: Final answer
x = 119,622,382.02
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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.