Finding the Fourth Proportional to 190,635.69, 263,108.79 and 105,780.09
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Solution
The fourth proportional to 190,635.69, 263,108.79 and 105,780.09 is: 145,994.02
Step by Step Solution
- Step 1: Write the proportion equation
190,635.69 : 263,108.79 = 105,780.09 : x - Step 2: Convert to fraction form
190,635.69/263,108.79 = 105,780.09/x - Step 3: Cross multiply
190,635.69x = 263,108.79 × 105,780.09 - Step 4: Simplify right side
190,635.69x = 27,831,671,485.99 - Step 5: Solve for x
x = 27,831,671,485.99/190,635.69 - Step 6: Final answer
x = 145,994.02
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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.