Finding the Fourth Proportional to 128,750.52, 193,177.62 and 45,702.84
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Solution
The fourth proportional to 128,750.52, 193,177.62 and 45,702.84 is: 68,572.66
Step by Step Solution
- Step 1: Write the proportion equation
128,750.52 : 193,177.62 = 45,702.84 : x - Step 2: Convert to fraction form
128,750.52/193,177.62 = 45,702.84/x - Step 3: Cross multiply
128,750.52x = 193,177.62 × 45,702.84 - Step 4: Simplify right side
128,750.52x = 8,828,765,858.44 - Step 5: Solve for x
x = 8,828,765,858.44/128,750.52 - Step 6: Final answer
x = 68,572.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.