Finding the Fourth Proportional to 165,939,721.20, 248,909,581.80 and 79,846,279.20
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Solution
The fourth proportional to 165,939,721.20, 248,909,581.80 and 79,846,279.20 is: 119,769,418.80
Step by Step Solution
- Step 1: Write the proportion equation
165,939,721.20 : 248,909,581.80 = 79,846,279.20 : x - Step 2: Convert to fraction form
165,939,721.20/248,909,581.80 = 79,846,279.20/x - Step 3: Cross multiply
165,939,721.20x = 248,909,581.80 × 79,846,279.20 - Step 4: Simplify right side
165,939,721.20x = 19,874,503,963,958,040 - Step 5: Solve for x
x = 19,874,503,963,958,040/165,939,721.20 - Step 6: Final answer
x = 119,769,418.80
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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.