Finding the Fourth Proportional to 135,221.18, 186,603.62 and 74,787.08
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Solution
The fourth proportional to 135,221.18, 186,603.62 and 74,787.08 is: 103,205.28
Step by Step Solution
- Step 1: Write the proportion equation
135,221.18 : 186,603.62 = 74,787.08 : x - Step 2: Convert to fraction form
135,221.18/186,603.62 = 74,787.08/x - Step 3: Cross multiply
135,221.18x = 186,603.62 × 74,787.08 - Step 4: Simplify right side
135,221.18x = 13,955,539,857.23 - Step 5: Solve for x
x = 13,955,539,857.23/135,221.18 - Step 6: Final answer
x = 103,205.28
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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.