Finding the Fourth Proportional to 135,395.52, 186,787.00 and 81,650.67
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Solution
The fourth proportional to 135,395.52, 186,787.00 and 81,650.67 is: 112,642.45
Step by Step Solution
- Step 1: Write the proportion equation
135,395.52 : 186,787.00 = 81,650.67 : x - Step 2: Convert to fraction form
135,395.52/186,787.00 = 81,650.67/x - Step 3: Cross multiply
135,395.52x = 186,787.00 × 81,650.67 - Step 4: Simplify right side
135,395.52x = 15,251,283,960.13 - Step 5: Solve for x
x = 15,251,283,960.13/135,395.52 - Step 6: Final answer
x = 112,642.45
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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.