Finding the Fourth Proportional to 153,761,109.25, 212,190,193.67 and 86,794,163.11
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Solution
The fourth proportional to 153,761,109.25, 212,190,193.67 and 86,794,163.11 is: 119,775,867.71
Step by Step Solution
- Step 1: Write the proportion equation
153,761,109.25 : 212,190,193.67 = 86,794,163.11 : x - Step 2: Convert to fraction form
153,761,109.25/212,190,193.67 = 86,794,163.11/x - Step 3: Cross multiply
153,761,109.25x = 212,190,193.67 × 86,794,163.11 - Step 4: Simplify right side
153,761,109.25x = 18,416,870,279,736,468 - Step 5: Solve for x
x = 18,416,870,279,736,468/153,761,109.25 - Step 6: Final answer
x = 119,775,867.71
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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.