Finding the Fourth Proportional to 136,611,523.70, 188,523,339.09 and 73,887,691.70
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Solution
The fourth proportional to 136,611,523.70, 188,523,339.09 and 73,887,691.70 is: 101,964,709.71
Step by Step Solution
- Step 1: Write the proportion equation
136,611,523.70 : 188,523,339.09 = 73,887,691.70 : x - Step 2: Convert to fraction form
136,611,523.70/188,523,339.09 = 73,887,691.70/x - Step 3: Cross multiply
136,611,523.70x = 188,523,339.09 × 73,887,691.70 - Step 4: Simplify right side
136,611,523.70x = 13,929,554,356,936,480 - Step 5: Solve for x
x = 13,929,554,356,936,480/136,611,523.70 - Step 6: Final answer
x = 101,964,709.71
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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.