Finding the Fourth Proportional to 126,176,415.60, 189,264,623.40 and 68,780,787.60
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Solution
The fourth proportional to 126,176,415.60, 189,264,623.40 and 68,780,787.60 is: 103,171,181.40
Step by Step Solution
- Step 1: Write the proportion equation
126,176,415.60 : 189,264,623.40 = 68,780,787.60 : x - Step 2: Convert to fraction form
126,176,415.60/189,264,623.40 = 68,780,787.60/x - Step 3: Cross multiply
126,176,415.60x = 189,264,623.40 × 68,780,787.60 - Step 4: Simplify right side
126,176,415.60x = 13,017,769,862,269,390 - Step 5: Solve for x
x = 13,017,769,862,269,390/126,176,415.60 - Step 6: Final answer
x = 103,171,181.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.