Finding the Fourth Proportional to 189,626,137.65, 261,705,307.19 and 107,125,236.81
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Solution
The fourth proportional to 189,626,137.65, 261,705,307.19 and 107,125,236.81 is: 147,844,824.32
Step by Step Solution
- Step 1: Write the proportion equation
189,626,137.65 : 261,705,307.19 = 107,125,236.81 : x - Step 2: Convert to fraction form
189,626,137.65/261,705,307.19 = 107,125,236.81/x - Step 3: Cross multiply
189,626,137.65x = 261,705,307.19 × 107,125,236.81 - Step 4: Simplify right side
189,626,137.65x = 28,035,243,006,626,920 - Step 5: Solve for x
x = 28,035,243,006,626,920/189,626,137.65 - Step 6: Final answer
x = 147,844,824.32
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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.