Finding the Fourth Proportional to 143,326.05, 197,792.17 and 78,798.09
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Solution
The fourth proportional to 143,326.05, 197,792.17 and 78,798.09 is: 108,742.59
Step by Step Solution
- Step 1: Write the proportion equation
143,326.05 : 197,792.17 = 78,798.09 : x - Step 2: Convert to fraction form
143,326.05/197,792.17 = 78,798.09/x - Step 3: Cross multiply
143,326.05x = 197,792.17 × 78,798.09 - Step 4: Simplify right side
143,326.05x = 15,585,645,212.96 - Step 5: Solve for x
x = 15,585,645,212.96/143,326.05 - Step 6: Final answer
x = 108,742.59
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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.