Finding the Fourth Proportional to 138,490.23, 191,116.60 and 74,828.01
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Solution
The fourth proportional to 138,490.23, 191,116.60 and 74,828.01 is: 103,262.70
Step by Step Solution
- Step 1: Write the proportion equation
138,490.23 : 191,116.60 = 74,828.01 : x - Step 2: Convert to fraction form
138,490.23/191,116.60 = 74,828.01/x - Step 3: Cross multiply
138,490.23x = 191,116.60 × 74,828.01 - Step 4: Simplify right side
138,490.23x = 14,300,874,855.97 - Step 5: Solve for x
x = 14,300,874,855.97/138,490.23 - Step 6: Final answer
x = 103,262.70
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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.