Finding the Fourth Proportional to 189,626,341.40, 261,705,588.36 and 107,125,440.56
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Solution
The fourth proportional to 189,626,341.40, 261,705,588.36 and 107,125,440.56 is: 147,845,105.50
Step by Step Solution
- Step 1: Write the proportion equation
189,626,341.40 : 261,705,588.36 = 107,125,440.56 : x - Step 2: Convert to fraction form
189,626,341.40/261,705,588.36 = 107,125,440.56/x - Step 3: Cross multiply
189,626,341.40x = 261,705,588.36 × 107,125,440.56 - Step 4: Simplify right side
189,626,341.40x = 28,035,326,450,079,012 - Step 5: Solve for x
x = 28,035,326,450,079,012/189,626,341.40 - Step 6: Final answer
x = 147,845,105.50
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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.