Finding the Fourth Proportional to 128,996.08, 193,495.32 and 39,039.44
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Solution
The fourth proportional to 128,996.08, 193,495.32 and 39,039.44 is: 58,559.52
Step by Step Solution
- Step 1: Write the proportion equation
128,996.08 : 193,495.32 = 39,039.44 : x - Step 2: Convert to fraction form
128,996.08/193,495.32 = 39,039.44/x - Step 3: Cross multiply
128,996.08x = 193,495.32 × 39,039.44 - Step 4: Simplify right side
128,996.08x = 7,553,948,935.42 - Step 5: Solve for x
x = 7,553,948,935.42/128,996.08 - Step 6: Final answer
x = 58,559.52
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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.