Finding the Fourth Proportional to 125,108,665.09, 172,649,954.09 and 69,353,944.21
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Solution
The fourth proportional to 125,108,665.09, 172,649,954.09 and 69,353,944.21 is: 95,708,440.94
Step by Step Solution
- Step 1: Write the proportion equation
125,108,665.09 : 172,649,954.09 = 69,353,944.21 : x - Step 2: Convert to fraction form
125,108,665.09/172,649,954.09 = 69,353,944.21/x - Step 3: Cross multiply
125,108,665.09x = 172,649,954.09 × 69,353,944.21 - Step 4: Simplify right side
125,108,665.09x = 11,973,955,283,816,920 - Step 5: Solve for x
x = 11,973,955,283,816,920/125,108,665.09 - Step 6: Final answer
x = 95,708,440.94
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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.