Finding the Fourth Proportional to 139,751.68, 192,758.52 and 135,122.80
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Solution
The fourth proportional to 139,751.68, 192,758.52 and 135,122.80 is: 186,373.94
Step by Step Solution
- Step 1: Write the proportion equation
139,751.68 : 192,758.52 = 135,122.80 : x - Step 2: Convert to fraction form
139,751.68/192,758.52 = 135,122.80/x - Step 3: Cross multiply
139,751.68x = 192,758.52 × 135,122.80 - Step 4: Simplify right side
139,751.68x = 26,046,070,946.26 - Step 5: Solve for x
x = 26,046,070,946.26/139,751.68 - Step 6: Final answer
x = 186,373.94
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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.