Finding the Fourth Proportional to 193,128.68, 266,516.74 and 108,245.74
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Solution
The fourth proportional to 193,128.68, 266,516.74 and 108,245.74 is: 149,378.65
Step by Step Solution
- Step 1: Write the proportion equation
193,128.68 : 266,516.74 = 108,245.74 : x - Step 2: Convert to fraction form
193,128.68/266,516.74 = 108,245.74/x - Step 3: Cross multiply
193,128.68x = 266,516.74 × 108,245.74 - Step 4: Simplify right side
193,128.68x = 28,849,301,743.69 - Step 5: Solve for x
x = 28,849,301,743.69/193,128.68 - Step 6: Final answer
x = 149,378.65
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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.