Finding the Fourth Proportional to 113,784.78, 156,990.62 and 68,440.08
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Solution
The fourth proportional to 113,784.78, 156,990.62 and 68,440.08 is: 94,427.84
Step by Step Solution
- Step 1: Write the proportion equation
113,784.78 : 156,990.62 = 68,440.08 : x - Step 2: Convert to fraction form
113,784.78/156,990.62 = 68,440.08/x - Step 3: Cross multiply
113,784.78x = 156,990.62 × 68,440.08 - Step 4: Simplify right side
113,784.78x = 10,744,450,592.05 - Step 5: Solve for x
x = 10,744,450,592.05/113,784.78 - Step 6: Final answer
x = 94,427.84
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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.