Finding the Fourth Proportional to 168,185,787.20, 252,278,680.80 and 122,836,155.20
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Solution
The fourth proportional to 168,185,787.20, 252,278,680.80 and 122,836,155.20 is: 184,254,232.80
Step by Step Solution
- Step 1: Write the proportion equation
168,185,787.20 : 252,278,680.80 = 122,836,155.20 : x - Step 2: Convert to fraction form
168,185,787.20/252,278,680.80 = 122,836,155.20/x - Step 3: Cross multiply
168,185,787.20x = 252,278,680.80 × 122,836,155.20 - Step 4: Simplify right side
168,185,787.20x = 30,988,943,188,400,064 - Step 5: Solve for x
x = 30,988,943,188,400,064/168,185,787.20 - Step 6: Final answer
x = 184,254,232.80
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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.