Finding the Fourth Proportional to 100,374.44, 138,561.17 and 70,278.08
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Solution
The fourth proportional to 100,374.44, 138,561.17 and 70,278.08 is: 97,014.86
Step by Step Solution
- Step 1: Write the proportion equation
100,374.44 : 138,561.17 = 70,278.08 : x - Step 2: Convert to fraction form
100,374.44/138,561.17 = 70,278.08/x - Step 3: Cross multiply
100,374.44x = 138,561.17 × 70,278.08 - Step 4: Simplify right side
100,374.44x = 9,737,811,945.96 - Step 5: Solve for x
x = 9,737,811,945.96/100,374.44 - Step 6: Final answer
x = 97,014.86
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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.