Finding the Fourth Proportional to 159,787.79, 220,414.16 and 102,406.74
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Solution
The fourth proportional to 159,787.79, 220,414.16 and 102,406.74 is: 141,261.70
Step by Step Solution
- Step 1: Write the proportion equation
159,787.79 : 220,414.16 = 102,406.74 : x - Step 2: Convert to fraction form
159,787.79/220,414.16 = 102,406.74/x - Step 3: Cross multiply
159,787.79x = 220,414.16 × 102,406.74 - Step 4: Simplify right side
159,787.79x = 22,571,895,575.44 - Step 5: Solve for x
x = 22,571,895,575.44/159,787.79 - Step 6: Final answer
x = 141,261.70
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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.