Finding the Fourth Proportional to 131,787.74, 197,679.84 and 31,948.80
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Solution
The fourth proportional to 131,787.74, 197,679.84 and 31,948.80 is: 47,922.77
Step by Step Solution
- Step 1: Write the proportion equation
131,787.74 : 197,679.84 = 31,948.80 : x - Step 2: Convert to fraction form
131,787.74/197,679.84 = 31,948.80/x - Step 3: Cross multiply
131,787.74x = 197,679.84 × 31,948.80 - Step 4: Simplify right side
131,787.74x = 6,315,633,672.19 - Step 5: Solve for x
x = 6,315,633,672.19/131,787.74 - Step 6: Final answer
x = 47,922.77
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1.5x scale
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.