Finding the Fourth Proportional to 100,954,981.74, 139,432,795 and 67,857,769.84
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Solution
The fourth proportional to 100,954,981.74, 139,432,795 and 67,857,769.84 is: 93,720,966.99
Step by Step Solution
- Step 1: Write the proportion equation
100,954,981.74 : 139,432,795 = 67,857,769.84 : x - Step 2: Convert to fraction form
100,954,981.74/139,432,795 = 67,857,769.84/x - Step 3: Cross multiply
100,954,981.74x = 139,432,795 × 67,857,769.84 - Step 4: Simplify right side
100,954,981.74x = 9,461,598,511,257,904 - Step 5: Solve for x
x = 9,461,598,511,257,904/100,954,981.74 - Step 6: Final answer
x = 93,720,966.99
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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.