Finding the Fourth Proportional to 128,648.08, 193,000.47 and 43,256.02
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Solution
The fourth proportional to 128,648.08, 193,000.47 and 43,256.02 is: 64,893.56
Step by Step Solution
- Step 1: Write the proportion equation
128,648.08 : 193,000.47 = 43,256.02 : x - Step 2: Convert to fraction form
128,648.08/193,000.47 = 43,256.02/x - Step 3: Cross multiply
128,648.08x = 193,000.47 × 43,256.02 - Step 4: Simplify right side
128,648.08x = 8,348,431,009.05 - Step 5: Solve for x
x = 8,348,431,009.05/128,648.08 - Step 6: Final answer
x = 64,893.56
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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.