Finding the Fourth Proportional to 139,267,747.44, 192,129,868.92 and 86,965,981.68
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Solution
The fourth proportional to 139,267,747.44, 192,129,868.92 and 86,965,981.68 is: 119,975,823.32
Step by Step Solution
- Step 1: Write the proportion equation
139,267,747.44 : 192,129,868.92 = 86,965,981.68 : x - Step 2: Convert to fraction form
139,267,747.44/192,129,868.92 = 86,965,981.68/x - Step 3: Cross multiply
139,267,747.44x = 192,129,868.92 × 86,965,981.68 - Step 4: Simplify right side
139,267,747.44x = 16,708,762,660,677,522 - Step 5: Solve for x
x = 16,708,762,660,677,522/139,267,747.44 - Step 6: Final answer
x = 119,975,823.32
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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.