Finding the Fourth Proportional to 149,228,738.19, 205,936,475.67 and 86,542,003.26
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Solution
The fourth proportional to 149,228,738.19, 205,936,475.67 and 86,542,003.26 is: 119,428,438.28
Step by Step Solution
- Step 1: Write the proportion equation
149,228,738.19 : 205,936,475.67 = 86,542,003.26 : x - Step 2: Convert to fraction form
149,228,738.19/205,936,475.67 = 86,542,003.26/x - Step 3: Cross multiply
149,228,738.19x = 205,936,475.67 × 86,542,003.26 - Step 4: Simplify right side
149,228,738.19x = 17,822,155,148,786,050 - Step 5: Solve for x
x = 17,822,155,148,786,050/149,228,738.19 - Step 6: Final answer
x = 119,428,438.28
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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.