Finding the Fourth Proportional to 121,116,712.80, 181,458,556.20 and 73,706,926.80
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Solution
The fourth proportional to 121,116,712.80, 181,458,556.20 and 73,706,926.80 is: 110,428,628.80
Step by Step Solution
- Step 1: Write the proportion equation
121,116,712.80 : 181,458,556.20 = 73,706,926.80 : x - Step 2: Convert to fraction form
121,116,712.80/181,458,556.20 = 73,706,926.80/x - Step 3: Cross multiply
121,116,712.80x = 181,458,556.20 × 73,706,926.80 - Step 4: Simplify right side
121,116,712.80x = 13,374,752,519,067,084 - Step 5: Solve for x
x = 13,374,752,519,067,084/121,116,712.80 - Step 6: Final answer
x = 110,428,628.80
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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.