Finding the Fourth Proportional to 157,977,396.12, 218,027,220.99 and 91,900,679.39
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Solution
The fourth proportional to 157,977,396.12, 218,027,220.99 and 91,900,679.39 is: 126,833,649.78
Step by Step Solution
- Step 1: Write the proportion equation
157,977,396.12 : 218,027,220.99 = 91,900,679.39 : x - Step 2: Convert to fraction form
157,977,396.12/218,027,220.99 = 91,900,679.39/x - Step 3: Cross multiply
157,977,396.12x = 218,027,220.99 × 91,900,679.39 - Step 4: Simplify right side
157,977,396.12x = 20,036,849,733,877,508 - Step 5: Solve for x
x = 20,036,849,733,877,508/157,977,396.12 - Step 6: Final answer
x = 126,833,649.78
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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.