Finding the Fourth Proportional to 163,811.70, 245,725.65 and 85,079.70
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Solution
The fourth proportional to 163,811.70, 245,725.65 and 85,079.70 is: 127,623.76
Step by Step Solution
- Step 1: Write the proportion equation
163,811.70 : 245,725.65 = 85,079.70 : x - Step 2: Convert to fraction form
163,811.70/245,725.65 = 85,079.70/x - Step 3: Cross multiply
163,811.70x = 245,725.65 × 85,079.70 - Step 4: Simplify right side
163,811.70x = 20,906,264,584.31 - Step 5: Solve for x
x = 20,906,264,584.31/163,811.70 - Step 6: Final answer
x = 127,623.76
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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.