Finding the Fourth Proportional to 139,942.50, 193,122.99 and 76,283.82
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Solution
The fourth proportional to 139,942.50, 193,122.99 and 76,283.82 is: 105,272.95
Step by Step Solution
- Step 1: Write the proportion equation
139,942.50 : 193,122.99 = 76,283.82 : x - Step 2: Convert to fraction form
139,942.50/193,122.99 = 76,283.82/x - Step 3: Cross multiply
139,942.50x = 193,122.99 × 76,283.82 - Step 4: Simplify right side
139,942.50x = 14,732,159,407.02 - Step 5: Solve for x
x = 14,732,159,407.02/139,942.50 - Step 6: Final answer
x = 105,272.95
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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.