Finding the Fourth Proportional to 145,787.57, 201,118.06 and 85,320.75
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Solution
The fourth proportional to 145,787.57, 201,118.06 and 85,320.75 is: 117,702.38
Step by Step Solution
- Step 1: Write the proportion equation
145,787.57 : 201,118.06 = 85,320.75 : x - Step 2: Convert to fraction form
145,787.57/201,118.06 = 85,320.75/x - Step 3: Cross multiply
145,787.57x = 201,118.06 × 85,320.75 - Step 4: Simplify right side
145,787.57x = 17,159,543,717.75 - Step 5: Solve for x
x = 17,159,543,717.75/145,787.57 - Step 6: Final answer
x = 117,702.38
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1.5x scale
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.