Finding the Fourth Proportional to 138,432.41, 191,036.84 and 74,770.26
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Solution
The fourth proportional to 138,432.41, 191,036.84 and 74,770.26 is: 103,183.02
Step by Step Solution
- Step 1: Write the proportion equation
138,432.41 : 191,036.84 = 74,770.26 : x - Step 2: Convert to fraction form
138,432.41/191,036.84 = 74,770.26/x - Step 3: Cross multiply
138,432.41x = 191,036.84 × 74,770.26 - Step 4: Simplify right side
138,432.41x = 14,283,873,822.53 - Step 5: Solve for x
x = 14,283,873,822.53/138,432.41 - Step 6: Final answer
x = 103,183.02
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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.