Finding the Fourth Proportional to 149,159.42, 205,849.19 and 85,506.79
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Solution
The fourth proportional to 149,159.42, 205,849.19 and 85,506.79 is: 118,004.63
Step by Step Solution
- Step 1: Write the proportion equation
149,159.42 : 205,849.19 = 85,506.79 : x - Step 2: Convert to fraction form
149,159.42/205,849.19 = 85,506.79/x - Step 3: Cross multiply
149,159.42x = 205,849.19 × 85,506.79 - Step 4: Simplify right side
149,159.42x = 17,601,502,004.22 - Step 5: Solve for x
x = 17,601,502,004.22/149,159.42 - Step 6: Final answer
x = 118,004.63
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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.