Finding the Fourth Proportional to 128,912.08, 193,368.48 and 40,168.48
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Solution
The fourth proportional to 128,912.08, 193,368.48 and 40,168.48 is: 60,252.83
Step by Step Solution
- Step 1: Write the proportion equation
128,912.08 : 193,368.48 = 40,168.48 : x - Step 2: Convert to fraction form
128,912.08/193,368.48 = 40,168.48/x - Step 3: Cross multiply
128,912.08x = 193,368.48 × 40,168.48 - Step 4: Simplify right side
128,912.08x = 7,767,317,921.51 - Step 5: Solve for x
x = 7,767,317,921.51/128,912.08 - Step 6: Final answer
x = 60,252.83
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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.