Finding the Fourth Proportional to 139,639,077.99, 192,701,926.86 and 80,935,793.67
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Solution
The fourth proportional to 139,639,077.99, 192,701,926.86 and 80,935,793.67 is: 111,691,394.82
Step by Step Solution
- Step 1: Write the proportion equation
139,639,077.99 : 192,701,926.86 = 80,935,793.67 : x - Step 2: Convert to fraction form
139,639,077.99/192,701,926.86 = 80,935,793.67/x - Step 3: Cross multiply
139,639,077.99x = 192,701,926.86 × 80,935,793.67 - Step 4: Simplify right side
139,639,077.99x = 15,596,483,392,152,392 - Step 5: Solve for x
x = 15,596,483,392,152,392/139,639,077.99 - Step 6: Final answer
x = 111,691,394.82
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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.