Finding the Fourth Proportional to 143,503,844.36, 198,035,252.28 and 78,313,748.36
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Solution
The fourth proportional to 143,503,844.36, 198,035,252.28 and 78,313,748.36 is: 108,072,943.85
Step by Step Solution
- Step 1: Write the proportion equation
143,503,844.36 : 198,035,252.28 = 78,313,748.36 : x - Step 2: Convert to fraction form
143,503,844.36/198,035,252.28 = 78,313,748.36/x - Step 3: Cross multiply
143,503,844.36x = 198,035,252.28 × 78,313,748.36 - Step 4: Simplify right side
143,503,844.36x = 15,508,882,913,465,036 - Step 5: Solve for x
x = 15,508,882,913,465,036/143,503,844.36 - Step 6: Final answer
x = 108,072,943.85
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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.