Finding the Fourth Proportional to 135,787.60, 203,705.70 and 56,909.80
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Solution
The fourth proportional to 135,787.60, 203,705.70 and 56,909.80 is: 85,374.88
Step by Step Solution
- Step 1: Write the proportion equation
135,787.60 : 203,705.70 = 56,909.80 : x - Step 2: Convert to fraction form
135,787.60/203,705.70 = 56,909.80/x - Step 3: Cross multiply
135,787.60x = 203,705.70 × 56,909.80 - Step 4: Simplify right side
135,787.60x = 11,592,850,645.86 - Step 5: Solve for x
x = 11,592,850,645.86/135,787.60 - Step 6: Final answer
x = 85,374.88
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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.