Finding the Fourth Proportional to 138,201.60, 190,713.60 and 77,773.44
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Solution
The fourth proportional to 138,201.60, 190,713.60 and 77,773.44 is: 107,324.75
Step by Step Solution
- Step 1: Write the proportion equation
138,201.60 : 190,713.60 = 77,773.44 : x - Step 2: Convert to fraction form
138,201.60/190,713.60 = 77,773.44/x - Step 3: Cross multiply
138,201.60x = 190,713.60 × 77,773.44 - Step 4: Simplify right side
138,201.60x = 14,832,452,726.78 - Step 5: Solve for x
x = 14,832,452,726.78/138,201.60 - Step 6: Final answer
x = 107,324.75
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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.