Finding the Fourth Proportional to 140,424.26, 193,785.56 and 76,762.07
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Solution
The fourth proportional to 140,424.26, 193,785.56 and 76,762.07 is: 105,931.70
Step by Step Solution
- Step 1: Write the proportion equation
140,424.26 : 193,785.56 = 76,762.07 : x - Step 2: Convert to fraction form
140,424.26/193,785.56 = 76,762.07/x - Step 3: Cross multiply
140,424.26x = 193,785.56 × 76,762.07 - Step 4: Simplify right side
140,424.26x = 14,875,379,368.97 - Step 5: Solve for x
x = 14,875,379,368.97/140,424.26 - Step 6: Final answer
x = 105,931.70
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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.