Finding the Fourth Proportional to 138,246.35, 190,780.36 and 77,817.92
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Solution
The fourth proportional to 138,246.35, 190,780.36 and 77,817.92 is: 107,388.95
Step by Step Solution
- Step 1: Write the proportion equation
138,246.35 : 190,780.36 = 77,817.92 : x - Step 2: Convert to fraction form
138,246.35/190,780.36 = 77,817.92/x - Step 3: Cross multiply
138,246.35x = 190,780.36 × 77,817.92 - Step 4: Simplify right side
138,246.35x = 14,846,130,081.33 - Step 5: Solve for x
x = 14,846,130,081.33/138,246.35 - Step 6: Final answer
x = 107,388.95
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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.