Finding the Fourth Proportional to 121,125,112.20, 181,687,668.30 and 111,771,750.60
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Solution
The fourth proportional to 121,125,112.20, 181,687,668.30 and 111,771,750.60 is: 167,657,625.90
Step by Step Solution
- Step 1: Write the proportion equation
121,125,112.20 : 181,687,668.30 = 111,771,750.60 : x - Step 2: Convert to fraction form
121,125,112.20/181,687,668.30 = 111,771,750.60/x - Step 3: Cross multiply
121,125,112.20x = 181,687,668.30 × 111,771,750.60 - Step 4: Simplify right side
121,125,112.20x = 20,307,548,748,323,128 - Step 5: Solve for x
x = 20,307,548,748,323,128/121,125,112.20 - Step 6: Final answer
x = 167,657,625.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.