Finding the Fourth Proportional to 143,216,938.36, 197,663,077.74 and 84,493,960.12
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Solution
The fourth proportional to 143,216,938.36, 197,663,077.74 and 84,493,960.12 is: 116,615,648.95
Step by Step Solution
- Step 1: Write the proportion equation
143,216,938.36 : 197,663,077.74 = 84,493,960.12 : x - Step 2: Convert to fraction form
143,216,938.36/197,663,077.74 = 84,493,960.12/x - Step 3: Cross multiply
143,216,938.36x = 197,663,077.74 × 84,493,960.12 - Step 4: Simplify right side
143,216,938.36x = 16,701,336,207,760,022 - Step 5: Solve for x
x = 16,701,336,207,760,022/143,216,938.36 - Step 6: Final answer
x = 116,615,648.95
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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.