Finding the Fourth Proportional to 137,811.16, 190,181.38 and 77,394.84
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Solution
The fourth proportional to 137,811.16, 190,181.38 and 77,394.84 is: 106,805.99
Step by Step Solution
- Step 1: Write the proportion equation
137,811.16 : 190,181.38 = 77,394.84 : x - Step 2: Convert to fraction form
137,811.16/190,181.38 = 77,394.84/x - Step 3: Cross multiply
137,811.16x = 190,181.38 × 77,394.84 - Step 4: Simplify right side
137,811.16x = 14,719,057,476.08 - Step 5: Solve for x
x = 14,719,057,476.08/137,811.16 - Step 6: Final answer
x = 106,805.99
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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.