Finding the Fourth Proportional to 138,260.69, 190,800.16 and 77,832.26
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Solution
The fourth proportional to 138,260.69, 190,800.16 and 77,832.26 is: 107,408.75
Step by Step Solution
- Step 1: Write the proportion equation
138,260.69 : 190,800.16 = 77,832.26 : x - Step 2: Convert to fraction form
138,260.69/190,800.16 = 77,832.26/x - Step 3: Cross multiply
138,260.69x = 190,800.16 × 77,832.26 - Step 4: Simplify right side
138,260.69x = 14,850,407,228.08 - Step 5: Solve for x
x = 14,850,407,228.08/138,260.69 - Step 6: Final answer
x = 107,408.75
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1.5x scale
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.