Finding the Fourth Proportional to 139,639,258.76, 192,702,175.61 and 80,935,974.23
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Solution
The fourth proportional to 139,639,258.76, 192,702,175.61 and 80,935,974.23 is: 111,691,643.57
Step by Step Solution
- Step 1: Write the proportion equation
139,639,258.76 : 192,702,175.61 = 80,935,974.23 : x - Step 2: Convert to fraction form
139,639,258.76/192,702,175.61 = 80,935,974.23/x - Step 3: Cross multiply
139,639,258.76x = 192,702,175.61 × 80,935,974.23 - Step 4: Simplify right side
139,639,258.76x = 15,596,538,317,867,702 - Step 5: Solve for x
x = 15,596,538,317,867,702/139,639,258.76 - Step 6: Final answer
x = 111,691,643.57
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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.