Finding the Fourth Proportional to 126,872,102.88, 175,119,991.71 and 76,628,340.72
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Solution
The fourth proportional to 126,872,102.88, 175,119,991.71 and 76,628,340.72 is: 105,769,149.30
Step by Step Solution
- Step 1: Write the proportion equation
126,872,102.88 : 175,119,991.71 = 76,628,340.72 : x - Step 2: Convert to fraction form
126,872,102.88/175,119,991.71 = 76,628,340.72/x - Step 3: Cross multiply
126,872,102.88x = 175,119,991.71 × 76,628,340.72 - Step 4: Simplify right side
126,872,102.88x = 13,419,154,391,637,456 - Step 5: Solve for x
x = 13,419,154,391,637,456/126,872,102.88 - Step 6: Final answer
x = 105,769,149.30
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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.