Finding the Fourth Proportional to 138,654.06, 191,342.16 and 74,991.84
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Solution
The fourth proportional to 138,654.06, 191,342.16 and 74,991.84 is: 103,488.50
Step by Step Solution
- Step 1: Write the proportion equation
138,654.06 : 191,342.16 = 74,991.84 : x - Step 2: Convert to fraction form
138,654.06/191,342.16 = 74,991.84/x - Step 3: Cross multiply
138,654.06x = 191,342.16 × 74,991.84 - Step 4: Simplify right side
138,654.06x = 14,349,100,647.97 - Step 5: Solve for x
x = 14,349,100,647.97/138,654.06 - Step 6: Final answer
x = 103,488.50
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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.