Finding the Fourth Proportional to 112,817,987.29, 155,631,524.19 and 73,682,672.05
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Solution
The fourth proportional to 112,817,987.29, 155,631,524.19 and 73,682,672.05 is: 101,644,665.29
Step by Step Solution
- Step 1: Write the proportion equation
112,817,987.29 : 155,631,524.19 = 73,682,672.05 : x - Step 2: Convert to fraction form
112,817,987.29/155,631,524.19 = 73,682,672.05/x - Step 3: Cross multiply
112,817,987.29x = 155,631,524.19 × 73,682,672.05 - Step 4: Simplify right side
112,817,987.29x = 11,467,346,556,755,254 - Step 5: Solve for x
x = 11,467,346,556,755,254/112,817,987.29 - Step 6: Final answer
x = 101,644,665.29
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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.