Finding the Fourth Proportional to 139,988.97, 193,214.94 and 82,606.95
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Solution
The fourth proportional to 139,988.97, 193,214.94 and 82,606.95 is: 114,015.39
Step by Step Solution
- Step 1: Write the proportion equation
139,988.97 : 193,214.94 = 82,606.95 : x - Step 2: Convert to fraction form
139,988.97/193,214.94 = 82,606.95/x - Step 3: Cross multiply
139,988.97x = 193,214.94 × 82,606.95 - Step 4: Simplify right side
139,988.97x = 15,960,896,887.83 - Step 5: Solve for x
x = 15,960,896,887.83/139,988.97 - Step 6: Final answer
x = 114,015.39
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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.