Finding the Fourth Proportional to 128,888.32, 193,341.12 and 44,656.96
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Solution
The fourth proportional to 128,888.32, 193,341.12 and 44,656.96 is: 66,988.43
Step by Step Solution
- Step 1: Write the proportion equation
128,888.32 : 193,341.12 = 44,656.96 : x - Step 2: Convert to fraction form
128,888.32/193,341.12 = 44,656.96/x - Step 3: Cross multiply
128,888.32x = 193,341.12 × 44,656.96 - Step 4: Simplify right side
128,888.32x = 8,634,026,662.20 - Step 5: Solve for x
x = 8,634,026,662.20/128,888.32 - Step 6: Final answer
x = 66,988.43
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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.