Finding the Fourth Proportional to 140,902,410.33, 194,446,902.65 and 78,179,643.99
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Solution
The fourth proportional to 140,902,410.33, 194,446,902.65 and 78,179,643.99 is: 107,888,783.37
Step by Step Solution
- Step 1: Write the proportion equation
140,902,410.33 : 194,446,902.65 = 78,179,643.99 : x - Step 2: Convert to fraction form
140,902,410.33/194,446,902.65 = 78,179,643.99/x - Step 3: Cross multiply
140,902,410.33x = 194,446,902.65 × 78,179,643.99 - Step 4: Simplify right side
140,902,410.33x = 15,201,789,623,744,290 - Step 5: Solve for x
x = 15,201,789,623,744,290/140,902,410.33 - Step 6: Final answer
x = 107,888,783.37
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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.