Finding the Fourth Proportional to 138,571,710.24, 191,207,657.68 and 79,822,900.56
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Solution
The fourth proportional to 138,571,710.24, 191,207,657.68 and 79,822,900.56 is: 110,143,331.70
Step by Step Solution
- Step 1: Write the proportion equation
138,571,710.24 : 191,207,657.68 = 79,822,900.56 : x - Step 2: Convert to fraction form
138,571,710.24/191,207,657.68 = 79,822,900.56/x - Step 3: Cross multiply
138,571,710.24x = 191,207,657.68 × 79,822,900.56 - Step 4: Simplify right side
138,571,710.24x = 15,262,749,845,301,162 - Step 5: Solve for x
x = 15,262,749,845,301,162/138,571,710.24 - Step 6: Final answer
x = 110,143,331.70
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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.