Finding the Fourth Proportional to 138,751.36, 191,559.36 and 91,088.08
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Solution
The fourth proportional to 138,751.36, 191,559.36 and 91,088.08 is: 125,755.70
Step by Step Solution
- Step 1: Write the proportion equation
138,751.36 : 191,559.36 = 91,088.08 : x - Step 2: Convert to fraction form
138,751.36/191,559.36 = 91,088.08/x - Step 3: Cross multiply
138,751.36x = 191,559.36 × 91,088.08 - Step 4: Simplify right side
138,751.36x = 17,448,774,308.43 - Step 5: Solve for x
x = 17,448,774,308.43/138,751.36 - Step 6: Final answer
x = 125,755.70
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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.